I haven't taken any statistics course but I need to solve this problem:

There are two guys in two different rooms, each of them has an exam with four options, let's say, a,b,c,d

What's the probability of both getting the same letter?

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- February 23rd 2009, 11:48 AMyasu7Simple problem
I haven't taken any statistics course but I need to solve this problem:

There are two guys in two different rooms, each of them has an exam with four options, let's say, a,b,c,d

What's the probability of both getting the same letter? - February 23rd 2009, 12:15 PMPlato
- February 23rd 2009, 07:05 PMyasu7
Person is room A chooses say choice d.

How many choices does person in room B have?

The person in room B has 4 options

How many ways will B's choice match person A?

There is only 1 way for B to match person A

that means 25% probabilities? - February 23rd 2009, 07:25 PMmr fantastic