Question

If A and B are two mutually exclusive and exhaustive events with PCB) = 3 P(A), then what is value of P (B)​

Answer 1

P(A)=1 AND P(B)=3P(A)

=P(A)+3P(A)=1

=P(A)=1/4

=P(B)=1-1/4=3/4

=P(B)=1-3/4=1/4