# Maths

posted by Ian

Two players each flip a fair coin. The probability that they get the same result can be expressed as ab where a and b are coprime positive integers. What is the value of a+b?

Dont get the a+b :(

1. Reiny

You must be referring to your earlier post here

http://www.jiskha.com/display.cgi?id=1365593486

I had the probabily as 1/4
comparing this with a/b ----> a=1 and b=4
then a+b = 1+4 = 5

2. Ian

wasnt 5 :(

3. black_widow

is it 3?

4. Stranger

yes it is 3

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