Question

AsB are only two outcome of an event if probability p(A) =0.72 FIND P(B)

Answer 1

its very simple.......A+B is always equals to 1
therefore B=1-A=1-0.72=0.28

Answer 2

HEY mate here is your answer

P(A)=0.72
So P(notA)=P(B)=1-0.72=0.28

HOPE it helps you