Question

n(Aub) = 29 n( A) = 15 اگر n(B) = ? ہوتو n(AnB) =7​

Answer 1

Answer:

n(B) = 21

Step-by-step explanation:

Given

n(AuB) = 29 n( A) = 15 n(B) = ? ہوتو n(AnB) =7​

n(AuB) =  n( A) +n(B) -n(AnB)

29=15+ n(B) -7

 n(B) = 29-15+7

 n(B) = 21