where can I find solutions to probability problems?

Question

where can I find solutions to probability problems?

Answer 1

first the percentage is already 40% cause whatever u picked is just considered as 2/ out of 5 possibility. if i will gte to choose. i'll use the mini my ni mo thingy. ahha!

Answer 2

Ah, a variation on the Monty Hall problem:



http://en.wikipedia.org/wiki/Monty_hall_problem



It is a probabilistic curiosity, this one. The highly unintuitive answer is that you actually **can** improve your chances by changing your mind.



Your problem appears to only be different in that it starts with 5 boxes. The above link should give you sufficient information to solve the problem.