Question

If A and B are subsets of the universal set
X and n(X) = 50, n(A) = 35, n(B) = 20,
n(A'B') = 5, find i) n (AUB)
ii) n (ANB)
iii) n(A'NB)
iv) n(ANB)​

Answer 1

Answer:

Ecology is a branch of biology concerning the spatial and temporal patterns of the distribution and abundance of organisms, including the causes and consequences.