1.

3) If n(A) =15, n(A U B) = 29, n(An B) =7, then find n(B).​

Answer»

Answer:

N(AUB) =n(a) +n(b) -n(ANB)

29=15+n(b) -7

29=8+n(b)

n(b) =21

hope it will HELP U



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