Question:
1=5,2=10,3=15,4=20,5=?
Seema
2015-12-25 23:47:13 UTC
1=5,2=10,3=15,4=20,5=?
247 answers:
2015-12-27 09:18:15 UTC
1 Not 25!









Interesting question, if 1=5, 2=10, 3=15, 4=20... what is 5=?

This has been going around Facebook lately. What is the answer?



You might be rushing to say obviously 25! Algebra help online might help you solve the equation and give this answer. But if you’re a bit of a smart-*** you might be thinking, hey wait a minute, those are equals signs! The answer is obviously 1! It says so on the first line. If 1=5, then surely 5=1. If you’re even more of a smart-*** you might point out that the 1-5 on the left side could be symbols, (much like x or y) and that the value of the symbol 5 could be anything.



However, let’s pretend that the correct interpretation is that you put the left side into some function f(x), such that you get the value on the right side.



f(1) = 5

f(2) = 10

f(3) = 15

f(4) = 20

f(5) = ?



The obvious candidate would be f(x) = 5x, in other words to multiply the number on the left side by 5, which would give f(5)=25.



That’s boring. Can we construct a function such that the first four lines still hold true, while f(5) takes on any arbitrary value? The answer is yes. You might remember from math class that you can solve a polynomial equation by moving everything to one side so you have (some polynomial) = 0 and then factoring the polynomial.

x3 - 6x2 + 5x = -12

could also be factored and written as

(3-x)(4-x)(1+x) = 0

You can confirm this by expanding the latter expression and realize that the fully expanded form matches the former expression. The latter form has an advantage when solving the equation because = 0 puts a constraint on the left side: anything multiplied by zero equals zero. For this reason, we know that for example when 3-x = 0, the whole expression on the left side equals zero. We can see that if x = 3, the whole expression becomes

(3-3)(4-3)(1+3) = 0*1*4 = 0

and we can conclude that since we have equality, x=3 is one of the roots for the equation.



Enough with the repetition of high school maths. How does this help us create a function that can give us an arbitrary value for f(5)? Well, let’s begin by crafting a function that returns 0 for all the values involved:

f(x) = (x-1)(x-2)(x-3)(x-4)(x-5)

Like before, if x = 3, then x-3 = 0 and the whole expression is zeroed out. It will still have all sorts of values for values of x other than our list of integers, 1 to 5. f(2.5) = 1.40625 for example, but we don’t care about that, for our purposes, do we?

We now have:



f(1) = 0

f(2) = 0

f(3) = 0

f(4) = 0

f(5) = 0



Pretty neat. We can now remove one term from this multiplication, say x-1 so you get f(x) = (x-2)(x-3)(x-4)(x-5) 2 to 5 will still be “zeroed” like before, whereas 1 will now have a non-zero value.



f(1) = 24

f(2) = 0

f(3) = 0

f(4) = 0

f(5) = 0



A similar expression could be created by removing the (x-2) part from the original expression: f(x) = (x-1)(x-3)(x-4)(x-5)



f(1) = 0

f(2) = -6

f(3) = 0

f(4) = 0

f(5) = 0



And so on with each term of the multiplication…

The important thing to realize, is that you can add these expressions together and use each expression to single out one of the integers in the range, and modify its value. You do this by multiplying one of the sub-expressions by any suitable value. Since any of the sub-expressions will only have a non-zero value when x equals a particular value in the list.

So let’s try out our new super powers.



f(x) = (2-x)(3-x)(4-x)(5-x) +

(1-x)(3-x)(4-x)(5-x) +

(1-x)(2-x)(4-x)(5-x) +

(1-x)(2-x)(3-x)(5-x) +

(1-x)(2-x)(3-x)(4-x)



f(1) = 24

f(2) = -6

f(3) = 4

f(4) = -6

f(5) = 24



Now you can normalize each sub-expression by dividing it with output of that expression for that value x.



f(x) = (2-x)(3-x)(4-x)(5-x)/24 +

(1-x)(3-x)(4-x)(5-x)/-6 +

(1-x)(2-x)(4-x)(5-x)/4 +

(1-x)(2-x)(3-x)(5-x)/-6 +

(1-x)(2-x)(3-x)(4-x)/24



f(1) = 1

f(2) = 1

f(3) = 1

f(4) = 1

f(5) = 1



Now you can multiply each sub-expression by the value you want the function to return for the corresponding value of x.



f(x) = 5 * (2-x)(3-x)(4-x)(5-x)/24 +

10 * (1-x)(3-x)(4-x)(5-x)/-6 +

15 * (1-x)(2-x)(4-x)(5-x)/4 +

20 * (1-x)(2-x)(3-x)(5-x)/-6 +

42 * (1-x)(2-x)(3-x)(4-x)/24



f(1) = 5

f(2) = 10

f(3) = 15

f(4) = 20

f(5) = 42



Now you can claim that the number series in the image actually represents this particular function you just created and that the correct answer for “5 =” is whatever you want it to be.



Boredom -> trolling with maths in ways no one gives a **** about.
polvon
2015-12-27 04:34:17 UTC
Interesting question, if 1=5, 2=10, 3=15, 4=20... what is 5=?

This has been going around Facebook lately. What is the answer?



You might be rushing to say obviously 25! Algebra help online might help you solve the equation and give this answer. But if you’re a bit of a smart-*** you might be thinking, hey wait a minute, those are equals signs! The answer is obviously 1! It says so on the first line. If 1=5, then surely 5=1. If you’re even more of a smart-*** you might point out that the 1-5 on the left side could be symbols, (much like x or y) and that the value of the symbol 5 could be anything.



However, let’s pretend that the correct interpretation is that you put the left side into some function f(x), such that you get the value on the right side.



f(1) = 5

f(2) = 10

f(3) = 15

f(4) = 20

f(5) = ?



The obvious candidate would be f(x) = 5x, in other words to multiply the number on the left side by 5, which would give f(5)=25.



That’s boring. Can we construct a function such that the first four lines still hold true, while f(5) takes on any arbitrary value? The answer is yes. You might remember from math class that you can solve a polynomial equation by moving everything to one side so you have (some polynomial) = 0 and then factoring the polynomial.

x3 - 6x2 + 5x = -12

could also be factored and written as

(3-x)(4-x)(1+x) = 0

You can confirm this by expanding the latter expression and realize that the fully expanded form matches the former expression. The latter form has an advantage when solving the equation because = 0 puts a constraint on the left side: anything multiplied by zero equals zero. For this reason, we know that for example when 3-x = 0, the whole expression on the left side equals zero. We can see that if x = 3, the whole expression becomes

(3-3)(4-3)(1+3) = 0*1*4 = 0

and we can conclude that since we have equality, x=3 is one of the roots for the equation.



Enough with the repetition of high school maths. How does this help us create a function that can give us an arbitrary value for f(5)? Well, let’s begin by crafting a function that returns 0 for all the values involved:

f(x) = (x-1)(x-2)(x-3)(x-4)(x-5)

Like before, if x = 3, then x-3 = 0 and the whole expression is zeroed out. It will still have all sorts of values for values of x other than our list of integers, 1 to 5. f(2.5) = 1.40625 for example, but we don’t care about that, for our purposes, do we?

We now have:



f(1) = 0

f(2) = 0

f(3) = 0

f(4) = 0

f(5) = 0



Pretty neat. We can now remove one term from this multiplication, say x-1 so you get f(x) = (x-2)(x-3)(x-4)(x-5) 2 to 5 will still be “zeroed” like before, whereas 1 will now have a non-zero value.



f(1) = 24

f(2) = 0

f(3) = 0

f(4) = 0

f(5) = 0



A similar expression could be created by removing the (x-2) part from the original expression: f(x) = (x-1)(x-3)(x-4)(x-5)



f(1) = 0

f(2) = -6

f(3) = 0

f(4) = 0

f(5) = 0



And so on with each term of the multiplication…

The important thing to realize, is that you can add these expressions together and use each expression to single out one of the integers in the range, and modify its value. You do this by multiplying one of the sub-expressions by any suitable value. Since any of the sub-expressions will only have a non-zero value when x equals a particular value in the list.

So let’s try out our new super powers.



f(x) = (2-x)(3-x)(4-x)(5-x) +

(1-x)(3-x)(4-x)(5-x) +

(1-x)(2-x)(4-x)(5-x) +

(1-x)(2-x)(3-x)(5-x) +

(1-x)(2-x)(3-x)(4-x)



f(1) = 24

f(2) = -6

f(3) = 4

f(4) = -6

f(5) = 24



Now you can normalize each sub-expression by dividing it with output of that expression for that value x.



f(x) = (2-x)(3-x)(4-x)(5-x)/24 +

(1-x)(3-x)(4-x)(5-x)/-6 +

(1-x)(2-x)(4-x)(5-x)/4 +

(1-x)(2-x)(3-x)(5-x)/-6 +

(1-x)(2-x)(3-x)(4-x)/24



f(1) = 1

f(2) = 1

f(3) = 1

f(4) = 1

f(5) = 1



Now you can multiply each sub-expression by the value you want the function to return for the corresponding value of x.



f(x) = 5 * (2-x)(3-x)(4-x)(5-x)/24 +

10 * (1-x)(3-x)(4-x)(5-x)/-6 +

15 * (1-x)(2-x)(4-x)(5-x)/4 +

20 * (1-x)(2-x)(3-x)(5-x)/-6 +

42 * (1-x)(2-x)(3-x)(4-x)/24



f(1) = 5

f(2) = 10

f(3) = 15

f(4) = 20

f(5) = 42



Now you can claim that the number series in the image actually represents this particular function you just created and that the correct answer for “5 =” is whatever you want it to be.



Boredom -> trolling with maths in ways no one gives a **** about.
prewish
2015-12-28 06:23:10 UTC
1
?
2015-12-28 04:30:29 UTC
1
?
2015-12-28 04:06:47 UTC
1
ZoA
2015-12-28 00:40:13 UTC
1
?
2015-12-28 00:35:01 UTC
1
amaya
2015-12-27 21:33:30 UTC
1
?
2015-12-27 19:04:49 UTC
1
?
2015-12-27 18:55:04 UTC
1
Geraldine
2015-12-28 01:06:04 UTC
1
Katy
2015-12-27 18:57:32 UTC
1
md
2015-12-27 16:30:36 UTC
1
Shamsuddin
2016-01-07 07:44:37 UTC
1
seyed hamidreza abbasi
2015-12-30 12:22:42 UTC
1
?
2015-12-29 23:37:56 UTC
1
Amin
2015-12-29 22:07:55 UTC
1
?
2015-12-29 14:56:23 UTC
1
Sportsgirl1
2015-12-29 14:32:06 UTC
1
Prosenjeet Bag
2015-12-29 11:29:53 UTC
1
2015-12-29 09:12:50 UTC
1
?
2015-12-29 10:34:27 UTC
1
lori d
2015-12-28 06:21:10 UTC
1
?
2015-12-29 07:15:59 UTC
1
?
2015-12-29 06:06:56 UTC
1
Gurdeep
2015-12-27 10:25:30 UTC
1
hetam
2015-12-27 09:41:42 UTC
1
Jon
2015-12-27 08:58:50 UTC
1
manjinder dhaliwal
2015-12-27 08:07:57 UTC
1
santosh
2015-12-27 04:16:57 UTC
1
?
2015-12-27 12:55:50 UTC
1
gayle
2015-12-27 08:14:56 UTC
1
Hyfa
2015-12-27 06:22:37 UTC
1
Brett
2015-12-27 03:09:23 UTC
1
2015-12-27 16:06:36 UTC
1
?
2015-12-29 08:18:03 UTC
1
lny
2015-12-29 00:42:42 UTC
1
Michael W
2015-12-28 22:30:47 UTC
1
2015-12-28 22:12:30 UTC
1
?
2015-12-28 21:42:25 UTC
1
zoe
2015-12-28 13:28:03 UTC
1
2015-12-28 12:30:31 UTC
1
Yashwinee
2015-12-28 10:20:43 UTC
1
LOST
2015-12-28 18:03:10 UTC
1
?
2015-12-28 15:28:54 UTC
1
shuffy
2015-12-26 22:50:22 UTC
1
Christian
2015-12-26 18:11:21 UTC
1
Apurva
2015-12-29 09:18:56 UTC
1
Jacob
2015-12-27 02:11:40 UTC
1
2015-12-26 17:17:04 UTC
1
diego
2015-12-26 17:05:27 UTC
1
shania
2015-12-26 16:00:38 UTC
1
Shevin
2015-12-26 15:24:27 UTC
1
mao_lim27
2015-12-26 14:10:06 UTC
1
zain
2015-12-28 06:55:47 UTC
1
2015-12-26 13:09:02 UTC
1
Chloe
2015-12-27 02:41:12 UTC
1
melanie
2015-12-26 12:54:54 UTC
1
pinkiepie :D
2015-12-26 12:04:31 UTC
1
arpan
2015-12-26 21:43:36 UTC
1
2015-12-26 20:22:01 UTC
1
Md. Shah Alam
2015-12-26 20:18:58 UTC
1
leo
2015-12-26 18:36:44 UTC
1
?
2015-12-26 18:30:14 UTC
1
ranga
2015-12-26 18:16:17 UTC
1
Connor
2015-12-26 18:15:47 UTC
1
Harsh
2015-12-26 05:41:32 UTC
1
tiago
2015-12-26 17:35:21 UTC
5=1
2015-12-25 23:49:41 UTC
5=5
RockIt
2015-12-28 13:03:18 UTC
5=5=1
robin
2015-12-29 02:55:06 UTC
If 1=5,

2=10.

3=15,

4=20,

Then

5=25
Maya
2015-12-26 14:59:50 UTC
5=25
Di
2015-12-26 12:21:40 UTC
5=25 and 1
Julio Cornejo
2015-12-26 14:25:42 UTC
5=25
A U M
2015-12-28 03:44:14 UTC
If 1=5; 5=1.
phjani
2015-12-26 07:40:15 UTC
1=5 so 5=1
soph
2015-12-27 17:03:19 UTC
1 or 25
?
2015-12-25 23:48:12 UTC
5=5
Seema
2015-12-25 23:47:52 UTC
5=1
?
2015-12-26 09:01:55 UTC
1 or 25
Kush
2015-12-26 23:10:15 UTC
5=25
?
2015-12-26 22:01:46 UTC
25 or 1
Monica B
2015-12-26 18:36:57 UTC
25 and 1
2015-12-30 07:15:07 UTC
1=5, then 5=1
Andres
2015-12-27 21:43:04 UTC
25 or 1
?
2015-12-28 07:30:11 UTC
5=25
?
2015-12-26 07:06:28 UTC
1 and 25
yamnnjr
2015-12-27 18:36:38 UTC
Yep, sounds like Common Core math to me.



5 would equal 25 . . . in non-common core, reality world because of the simple concept liberals never understand.



Just because 1 = 5 does NOT mean, necessarily, that 5 = 1



Of course, your class is no doubt run by liberals who want you to stay in your little box and think the way Democrats want to instruct you to think like.



So, take the stupid answer, and put 5 = 1. It's most likely a trick question meant to make you accept that which they tell you and not think critically about it.



In real life however, it's similar to this. A = B, but B does not necessarily equal A.



Mathematically, equals means that either can be used interchangeably, which would mean that if 1 = 5, then 5 always also = 1, but in your situation, you are following a pattern where it is established that 1 = 5, but not necessarily that 5 = 1, which means that you should follow the pattern, that 5 = 25.



The logic behind this is that there is no basis for establishing that 5 = 1 because simply having 1 = 5 is not sufficient information to ascertain that 5 is also equal to 1, always. And since this is a pattern you are following, the pattern would be that the next number equal to 25.



Further logic to support this, and this is what critical thinking is that the Democrats is trying to keep you from being able to do, none of those numbers are actually equal to each other in the first place, so the rule of equality in mathematics is already broken if we are to accept those values as actually true values. The fact that none of those values are actually true, mathematically, proves that even though 1 = 5, that does not necessarily mean that 5 = 1.



We can say, however, given this situation, logically, that 5 = 1 some of the time, but we cannot say that it is a true value because we do not know that 5 = 1 all of the time. We can only say that 1 = 5 all of the time.



Therefore, since we cannot say that 5 = 1 all of the time, the next course of logic would be to assume that this isn't that, and that it must need us to follow the pattern that seems presented, which is that 5 = 25.



But like I said, the Democrats made Common Core, and they want you to be stupid and accepting of what they tell you to accept, and therefore, you should go with the stupid answer that doesn't require any critical thought, just blind obedience to the first statement, and say that 5 = 1.
?
2015-12-26 11:40:11 UTC
25
Royla
2015-12-26 11:21:31 UTC
25
2015-12-26 11:01:05 UTC
25
Motahar
2015-12-27 02:23:12 UTC
25
Guy
2015-12-27 02:21:44 UTC
25
Puzzling
2015-12-26 07:46:59 UTC
I'm assuming these are terms in a sequence:

a₁ = 5

a₂ = 10

a₃ = 15

a₄ = 20

a₅ = ?



By inspection, this is an arithmetic sequence where the first term is 5 and there is a common difference of 5.



The general formula for the nth term of an arithmetic sequence is:

an = a₁ + d(n - 1)



a₁ : first term (5)

d : common difference (5)



Plug in your specific values:

an = 5 + 5(n - 1)



Distribute:

an = 5 + 5n - 5



Simplify:

an = 5n



Now it is asking for the 5th term, so plug in n=5:

a₅ = 5(5)



Answer:

a₅ = 25
?
2015-12-26 13:55:02 UTC
1=5, so 5=1
Bryce
2015-12-26 13:40:33 UTC
25
Rezaul islam Chowdhury
2015-12-27 02:21:37 UTC
25
Monica Dela cruz
2015-12-26 17:18:07 UTC
25
lo
2015-12-26 10:42:31 UTC
25
?
2015-12-29 19:49:47 UTC
5
?
2015-12-27 01:34:24 UTC
25
Mridha
2015-12-29 04:54:50 UTC
5
yeats
2015-12-28 18:24:23 UTC
5
samson
2015-12-27 20:30:00 UTC
5
magicman0922
2015-12-26 17:13:13 UTC
25
maria
2015-12-27 05:27:40 UTC
Technically, if you are following the pattern of ever 1 = 5 it is assumed that the place value of 1 has been changed to 5. So, if 1=5 it 5(5) = 25. So 25. BUT you may realize, that just the the rest of these, each equation can be simplified! So 2=10 = 1=5 ! So if you take 5 and plug 35 in for the question mark, you get 5=25. BUT you simplify , and divide both sides by 5 your get 1=5..... So if you take the 5 out in 1=5, you'd realize the 5 is the question mark, and plug that in to the original question (5=?) and 5 DOES equal 5!! So 5=5 now it can be further simplified. To 1=1 if you divide both sides by 5. Take the "?" As the variable and the ? = 1. SO THE ANSWER = 1.
NewIntheCity
2015-12-26 17:02:10 UTC
25
2015-12-26 16:58:48 UTC
25
joginder
2015-12-29 20:50:37 UTC
3
Tom
2015-12-27 04:16:48 UTC
5
?
2015-12-28 00:30:47 UTC
5=5
?
2015-12-26 09:21:42 UTC
25
Finch
2015-12-26 16:41:51 UTC
25
Cathi K
2015-12-26 22:25:18 UTC
25
Amau
2015-12-26 20:54:40 UTC
25
?
2015-12-26 20:54:19 UTC
25
erica
2015-12-26 19:51:43 UTC
25
maricelaa
2015-12-26 18:29:05 UTC
25
Richard
2015-12-26 17:10:17 UTC
25
Melinda Carlisle
2015-12-26 17:06:47 UTC
25
Jack
2015-12-26 18:31:32 UTC
5
sepia
2015-12-26 06:22:45 UTC
25
?
2015-12-27 00:19:58 UTC
Three possible answers dependant upon one's reasoning:

A. 5=5, given the identity of 5 as itself, or rather anything equating to 5 as a function of any single or series of operations

B. on the fifth set of the pattern, the value would equal 25.

Not assertion 5=25 but recognising the abovementioned sequence as a pattern produced by a single, constant operation (Element of Natural Numbers X 5). This is most accurate. The people answering one are least-correct. given that the elements of natural num. 2-4 deviate from the fundamental notion of equality where Leftside= rightside, so that notation can be disregarded, and it is most likely that you mean a number, N, undergoing some constant operation (C) = a value, P : i.e 2= 2*5=10 -- 3= (3*5)=15 that is: N(element of natural numbers)*C=P



c. Or if you want to fallaciously appropriate equality as with "answer" A. : 5=1, as it was the initial assertion



In conclusion: those stating "1" think they are clever, but are not. The MOST LOGICAL, thus accurate, answer would be

for set 5 the product (P) is 25 so N(element of the real numbers) * C(constant)= P (product of N as N is the dependant variable)

5 is the constant by which N is multiplied

therefore:

Let P:= P(N)

P(N) = N * Constant

N=5, here (5th set)

C= 5:= constant value

P(N)= 5*5

P(N) = 25

The cutest (IMO) form to put this would be p(N)= 5N; a simple lil linear function.

The basic format thereof being Y= mX or f(X)=mX, equivalently.



Therefore, on the final, and fifth step of the function, the value is 25. Expressed inaccurately as (5=25).

Expressed accurately as: P(N)= N(e N) * Const.; 25= (5) *5 ; (simplified) 25= 5^2;

which, ironically is expressed equivalently as 25=25, ls=rs..
?
2015-12-28 05:46:47 UTC
25
Adrienne
2015-12-29 03:39:01 UTC
25
Justin
2015-12-29 03:25:44 UTC
25
lindaz
2015-12-29 00:14:14 UTC
25
Mohaimenul
2015-12-28 13:59:39 UTC
25
2015-12-28 13:57:51 UTC
25
Chandra
2015-12-28 11:43:36 UTC
25
Nayem
2015-12-29 02:50:50 UTC
25
None
2015-12-26 06:05:56 UTC
25
doucet
2016-12-18 15:44:14 UTC
15 10 3
?
2015-12-28 08:46:53 UTC
25
mike
2015-12-27 18:12:14 UTC
5 = 5
naser
2015-12-28 03:58:05 UTC
25
2015-12-28 03:17:59 UTC
25
نشانه
2015-12-28 03:02:31 UTC
25
Chris
2015-12-27 23:21:56 UTC
25
MOHSIN
2015-12-27 22:26:14 UTC
25
Adele
2015-12-27 18:09:07 UTC
25
?
2015-12-26 00:28:26 UTC
25
?
2015-12-27 06:40:11 UTC
Since when in maths could you use a number as representative of anything other than the number itself?



The rules of mathematics have not suddenly changed. What we are seeing here is simply mathematical ineptitude. By saying that 1 = 5 does not make 1 = 5. 1 is equal to 1; 5 is equal to 5.



1 does not equal 5 and the next 3 in the sequence are equally false.



5 = 5



There is no other answer in mathematics. The question is clearly not ambiguous - it is clearly false. There is nothing to presume - it is incorrect.



EDIT: I have spotted about 11 people out of 128 so far who have either pointed out that 5=5 or that the question is false by nature. That is like 8.6% of people who have actually got the only answer it could possibly be. Not only is this question in the maths section - if it is numbers then by default it IS mathematics. If this is some kind of study to show how bad people are at mathematics then it has succeeded.
2015-12-25 23:58:49 UTC
25
Ifrah
2015-12-29 07:49:33 UTC
25
?
2015-12-28 00:28:48 UTC
25
Smokies Hiker
2015-12-26 10:47:17 UTC
5=25.
Berry Pink
2015-12-26 13:17:04 UTC
5=25 (because it got multiplied by 5 following the rule). But also 1=5 so that means that 25=1 too. Basically 5= 1 and 25.
?
2015-12-26 22:14:04 UTC
Sequence this math

1=5

2=10

3=15

4=20

5=25

All the sequence are increased 5 every single sequence.
Daniel
2015-12-30 14:52:44 UTC
1 Not 25!
Sara
2015-12-27 14:10:22 UTC
25
Miss Lovett
2015-12-26 00:09:16 UTC
7
M. Ikram Niaz
2015-12-26 13:53:57 UTC
1=5,2=10,3=15,4=20,5=25

so Answer is 5=25
JAYAPRAKASH
2015-12-27 05:08:39 UTC
25
?
2015-12-27 03:40:16 UTC
25
vyshak
2015-12-26 23:56:44 UTC
25.as 1=5and 1×1=5×5 hence1=25 and 5=25
Jacob
2015-12-27 09:14:26 UTC
Logical answer would be 25 but it's obviously a troll equation so since 1=5 then also 5=1
ajay
2016-01-01 06:51:26 UTC
25
MrPopular
2015-12-26 21:03:34 UTC
25.

This looks like a series of numbers. Each number is multiplied by 5. Based on the way the question is written, if 1 gives you 5, and 2 gives you 10, etc. then 5 must give you 25. If you notice the the right side to each equal sign (=) is five times the number to the left of the equal sign (=). 5 is 1x5, 10 is 2x5, etc.So the last one is 25 because 25 is 5x5.
Benjamin
2015-12-29 13:56:56 UTC
25
Bob's Uncle
2015-12-26 10:11:51 UTC
We're sorry, did you mean to ask, 1n = 5, 2n = 10, 3n = 15, 4n =20, 5n = ? Because then 5n = 25. No way in mathematics would 1 =5, 2 = 10, 3 = 15, or 4 = 20.
danzunko
2015-12-26 09:59:49 UTC
The answer is 1. Look at the first given fact: 1=5. If 1=5 then 5=1. Easy!
?
2015-12-28 08:12:20 UTC
5=1 because 1=5
DAVID UNDERTAKER
2015-12-25 23:50:53 UTC
25
BANIYA
2015-12-26 10:01:41 UTC
1=5 so 5=1

if you are calculating like this x=x*5

5=5*5

5=25
?
2015-12-26 04:05:43 UTC
It's a trick question. If 1=5 then 5=1.
?
2015-12-26 00:47:52 UTC
5=25

It looks like each one is multiplying the number 5 like this:

1x5=5 so then it would be that 1=5,

2x5=10 so then it would be that 2=10,

3x5=15 so then it would be that 3=15,

4x5=20 so then it would be that 4=20,

5x5=25 so then it would be that 5=25
2015-12-31 18:44:02 UTC
It's 1
Yoki S
2015-12-26 12:29:37 UTC
25 cuz rule is x5 so 1 x 5 is 5, 2 x 5 is 10 and so on
David
2015-12-26 15:44:15 UTC
30
Ivan
2015-12-29 06:11:08 UTC
30
jay
2015-12-28 19:51:31 UTC
13
Blue
2015-12-30 12:12:57 UTC
I like those two huge answers up there. Guys, if 1=5, then 5 must be equal to 1 as well.
ajaipalSingh
2015-12-26 03:37:36 UTC
Obviously 1. In the first statement itself it's given 1=5 so 5 will be equal to 1 only what else. The numbers in between are just for confusing us.
Matt
2015-12-29 07:51:39 UTC
5=25 because it goes up in an order. Every number jumps 5 so 1=5 5=5x5 5x5=25
?
2015-12-31 22:02:18 UTC
answer is 1 because said in the begining that 1=5 so 5=1
lenpol7
2015-12-26 02:03:56 UTC
5 = 25

#1 ; 5(1) = 5

#2 ; 5)2) = 10

#3 ; 5(3) = 15

#4 ; 5(4) = 20

#5 ; 5(5) = 25



#n = 5Xn = 5n
Danial
2015-12-27 19:51:17 UTC
Mathematically, It would be equal to 25, but since it says, "1 = 5" in the beginning, then 5 must also be equal to one! So the answer is 1.

Hope that helps!
?
2015-12-30 02:50:10 UTC
I'm not bright as someone before me, so I'm just gonna say that



5 = 1

since

1 = 5
Domantas
2016-01-01 09:56:11 UTC
This is very easy. Since you already stated that 1=5 it means that 5=1. '1=5' is an equation and both sides of equation are equal, so it's exactly the same if you turn it around i.e. '5=1'.
wpaleriders55
2015-12-28 19:29:10 UTC
1=5,5=1
Zac
2015-12-27 05:28:25 UTC
Did someone change the meaning of the equal to sign? I always thought = meant equal to, and so none of these expressions make any sense. If you want to use a function, specify it. Otherwise invent a new operator rather than over-riding the equals operator, like they do in computing languages, where there is an = and == and === which mean entirely different things, if the keyboard doesn't support newfangled operators.
kiko
2015-12-31 22:13:28 UTC
IF 1=5 THEN 5 ALSO MUST BE EQUAL TO 1
Pandonia
2015-12-27 19:03:57 UTC
5 is one because one is 5. unless it was a ratio. 1:5, 2:10, 3:15, 4 :20, 5:25.
Babak
2015-12-27 06:57:59 UTC
Actually it is mathematically incorrect to say:



1=5



Because "1" and "5" are both constants and two different constants can never be equals.



The correct form of the question is as follows:



f(1) = 5

...

f(5) = ?
Sidd
2015-12-28 06:17:01 UTC
It's 'one'

If 1=5, 5=1
Sirajis
2015-12-29 03:24:40 UTC
1. cause 1=5

then 5=1 easy logic.
Fred
2015-12-30 12:02:24 UTC
5=5



This is indisputable, as 5 does NOT equal any number other than 5, regardless how many false statements precede the question.



An old riddle, attributed to Abe Lincoln:



"If you call a tail a leg, how many legs does a dog have?"

Ans:

"Four. Calling a tail a leg, doesn't make it one!"
Margret
2015-12-26 21:20:23 UTC
25 because 1*5=5, 2*5=10, etc.
Dylan
2015-12-27 02:18:49 UTC
Uhg... no idiots... Its 25. 1 = 1x5, 2 = 2x5 3 = 3x5 etc so its 25
?
2015-12-26 12:19:16 UTC
You said .. 1 = 5 .. so .. 5 = 1
freeanswers
2015-12-29 06:45:09 UTC
Excellent answer! We dont need to get trapped by the traditional conditioning, which looks like 5=25, just as we are taught: A for apple, B for bat!! Could very well be A for bat, and B for apple? Why are we looking for a pattern that have been reinforced on us.
surya
2015-12-29 10:01:47 UTC
if 1=5

then it is obvious 5=1

:)
My
2015-12-27 10:23:48 UTC
lol 5=1
Sonja
2015-12-26 12:12:15 UTC
5=25

Formula: F(x)= 5x
?
2015-12-27 02:41:20 UTC
55
Chris
2015-12-27 14:35:40 UTC
25. Arithmetic.

5=25.
2015-12-28 10:02:18 UTC
25........ 1=5, 5 does not equal 1
Riley
2015-12-26 11:59:57 UTC
Umm 5 is equal to 5
Casper_the_friendly_ghost
2015-12-26 17:11:23 UTC
25?
Nadia
2015-12-29 08:42:04 UTC
1 because if 1=5,5=1
wirehawkboston
2015-12-26 19:36:36 UTC
1 = 5, which is the first equation given, but I don't believe the problem is clearly explained, because if it concerned progressions, the value for 5 = would be 25.
MICHAEL K
2015-12-26 05:55:17 UTC
either 25 or 1.
Sam
2015-12-26 18:10:50 UTC
If depends on you, if its a real math question, the answer is 25, but if its not a question your teacher gave, then the answer is 1 as you've stated before
Alize
2015-12-26 10:28:40 UTC
5=25, multiply 5 by the first number
?
2015-12-27 00:13:03 UTC
25 if that's wrong then 1
?
2015-12-28 22:07:54 UTC
25?
Eddie D
2015-12-27 01:25:53 UTC
If 1=5 then 5 must equal 1but it makes no sense so this is not mathematics it's jokes and riddles. Just stupid.



To make sense therefore, one must assume that the equals sign means something OTHER than equals, for

instance, indicates or suggests, in which case 5 indicates/suggests 25.
Need
2015-12-27 10:20:19 UTC
25?

To me it's like a pattern that goes by 5's,

5, 10, 15, 20, 25, 30, 35... etc...
Michael Corleone
2015-12-25 23:49:35 UTC
5=1 is the right answer
?
2015-12-26 16:31:01 UTC
I was going to say 25 but then I read all the others answers and now I'm confused
Martin
2015-12-27 16:17:44 UTC
Pretty easy considering at the complete start of the sequence it says that 5=1.
innocent
2015-12-27 03:50:21 UTC
5 = 25



what is so difficult about it
2015-12-29 02:33:34 UTC
5=25, I guess
isabella
2015-12-26 08:20:23 UTC
25! Each number is being multiplied by 5.
Zilla
2015-12-26 16:50:06 UTC
in the sequence, each left side number is multiplied by 5 to get the right side number. Therefore, with 5 on the left, you would multiply 5*5 to get the right side number, 25
brendan
2015-12-27 16:55:12 UTC
answer is 1
 ᑕesaя  🏄
2015-12-27 15:38:41 UTC
The answer is 5=25.
?
2015-12-26 09:51:10 UTC
5 = 25. You're multiplying by five to get the desired answer.
?
2015-12-28 09:46:56 UTC
25!
?
2015-12-28 18:42:27 UTC
ANY number you want!! Seriously. I'm partial to 42 (the meaning of life - Hitchhiker's Guide...)



They gave no other restraints like a "linear sequence", so we could come up with ALL sorts of equations!
?
2015-12-26 10:30:36 UTC
a5 =25
Michael
2015-12-26 19:32:07 UTC
25 & 1
Daniel
2015-12-29 23:51:22 UTC
25 because everything is getting multiple by 5
ali omer
2015-12-30 04:33:26 UTC
simple 25
?
2015-12-27 10:43:08 UTC
Anything, including 25 (top comments are wrong, 25 works... obviously)
D
2015-12-31 08:55:56 UTC
These kinds of questions are really very dumb, in my opinion. You can't just saying that x=y, because they aren't equal. It makes no sense. You could apply them to numbers, and that would work just fine.
?
2015-12-27 09:03:23 UTC
5=1,5=25
2015-12-25 23:50:40 UTC
25.
?
2015-12-27 19:08:33 UTC
You're all wrong. It would be 25 in this sequence. Sorry.
Chad
2015-12-27 23:05:17 UTC
Deez Nutz! HA! Gottem!
Jeejumon.ck Cherayikizhakekkara
2015-12-27 07:05:05 UTC
Answer is 25.
2015-12-28 10:39:56 UTC
25??
?
2015-12-26 16:57:19 UTC
1

If you wanted the answer you were looking for (25) you would have had to say 1x=, 2x=, 3x=, ect...
Free Advice
2015-12-26 20:08:38 UTC
Twenty five (25)
?
2015-12-26 15:38:43 UTC
if the = mean equal then 5=5
2015-12-26 23:23:25 UTC
Its array you don't know basics of mathematics.Go back to scool math noobs.Answer is 25,6
Dena
2015-12-28 10:12:26 UTC
-135
ironman
2015-12-26 21:38:59 UTC
25. Thus 1,5,25 have same value.
food
2015-12-29 09:50:37 UTC
25? I don't know I'm dumb, sounds like a trick question anyways
2015-12-27 20:08:45 UTC
I agree. 1 is the answer. :)
2015-12-26 07:17:55 UTC
764,281.546, roughly. I rounded it a bit for convenience.
nontarzaniccaulkhead
2015-12-27 07:10:46 UTC
They are all false statements, given the meaning of the sign "=".
L
2015-12-29 09:42:53 UTC
Geez, wayyyy to many numbers lol
?
2015-12-28 19:53:30 UTC
uno
Grace
2015-12-27 02:39:20 UTC
25 duh!!! The pattern is so obvious so why is everyone saying 1 and copying eachother gawshh!!!!
?
2015-12-27 11:01:55 UTC
5463...3268464 trust me !


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