Question

E) A and B are the subsets of a universal set U. If n (A) = 63, n (B) =72.

n (AUB) ,= 115, n (AUB) = 20, find
(i) n (U)
(ii) n(u)
(iii) n (Anb)
(iv) n (only A)
Also illustrate the above information in Venn-diagram.
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Answer 1

A is the correct answer

Answer 2

sorry, there are two (AUB), I think one should be n(AnB) and i.e n(AnB)=20.Right?