Thread: Simple 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?

Originally Posted by yasu7

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?

Person is room A chooses say choice d.
How many choices does person in room B have?
How many ways will B's choice match person A?

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?

Originally Posted by yasu7

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?

1/4, please!

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