If A and B are two independent events with P(A) = 3/5 and P(B) = 4/9, then P (A′ ∩ B′) equals
As A and B are independent so A’ and B’ are also independent.
P (A’ ∩ B’) =P(A’).P(B’)
And, we know, P(A’) =(1-P(A)) and P(B’)=(1-P(B)