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?

Answer 1

the 4 possible outcomes are

HH
HT
TH
TT

so the prob (both have the same) = 1/4

you do the a and b stuff

Answer 2

Dont understand the a,b one TT