Question

If A and B are two sets such that n(A) = 15, n(B) = 21 and n(A ∪ B) = 36, then n(A ∩ B)= 0

Answer 1

Answer:

n( AnB ) = 0

Step-by-step explanation:

n(A) + n(B) = n(AuB) - n( AnB)

15 + 21 = 36 - 0

36 = 36