probability questions for math HOMEWORK HELP?

Question

a box contains six green marbles,five blue marbles and eight orange marbles. Without looking, what is the probability that the first two picked will be green followed by blue?

the names of six boys and nine girls from your class are put into a hat. What is the probability that the first two names chosen will be a boy followed by a girl?

A face-down deck of cards contains five hearts, three diamonds, five clubs and four spades. what is the probability that the first two cards drawn will be diamonds followed by hearts?

your drawer contains five red socks and eight green socks. its too dark to see which are which. what is the probability that the first two you pick are both red socks?

there are five black cats and four gray cats in a cage and none of them want to be in there. the cage door opens briefly and two cats escape. what is the probability that both escaped cats are gray?

the names of eight boys and six girls from your class are put into a hat what is the probability that the first two names chosen will both be boys?

your drawer contains seven red socks and five green socks its too dark to see which are which what is the probability that the first two you pick are both green socks?

there are three black cats and six gray cats in a cage, and none of them want to be in there the cage door opens briefly and two cats escape. what is the probability that both escaped cats are gray?

the face-down deck of cards contains four hearts six diamonds three clubs and six spades. what is the probability that the first two cards drawn will both be spades?

a box contains four green marbles eight blue marbles and three orange marbles. without looking, what is the probability that the first two picked will both be green?

Answer 1

So basically, to solve a probability, you take the fraction of the likelihood and each time you have to do it, multiply it. I'll explain a couple:



1. There are 19 total marbles. Five are blue, so the first time, it's 5/19 that it will be blue. Say you get a blue, then you have four blue out of eighteen total - 4/18, or 2/9. So, you multiply 5/19 by 2/9 to get

10/171 - that's the answer.



2. (I'm assuming it's asking for one diamond, then one heart) Ok so you start with a total of 17 cards. The first diamond you could draw would have a probability of 3/17. Say you drew that, the next heart would be 5/16 (five hearts out of sixteen total). Multiply, you get

15/272



3. 5/39



4. 1/6



5. 4/13



6. 5/33



7. 5/12



8. 5/57



9. 2/35



Make sure to check if these are right.

Hope this helps!

Answer 2

that's what i think of: The 8-sided die has a million-8 on it, and the 4-sided die has a million-4 on it. Then there is 4 mixtures of the two cube which will upload as much as 9. So, the risk is 4/32 (or a million/8) that's 12.5%. Rounded to thirteen%. it might seem slightly perplexing, yet i'm hoping this facilitates!

Answer 3

you just have to add all the numbers up, and for each colour/object, it is the number of them over the total of all, in a fraction.

why are you asking people to do your homework for you though? im sorry but i cant do that. the whole point of homework is so you learn to work independantly. asking someone else to do it just defeats the point.

no offence, but i think you should be working out the answers yourself, especially if you arent sure about the subject :)