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CBSE Class 11-science Answered

Let A and B be two finite disjoint sets such that n (A  B) = 400, n(A) = 250. Find n(B).
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer
We know that:
If A and B are finite disjoint sets then
n(A  B) = n(A) + n(B)
 400 = 250 + n(B)
 n(B) = 150
Answered by | 04 Jun, 2014, 03:23: PM

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