Math, asked by yeioapapqpa, 1 year ago

solve the following question

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Answered by ayush952321

0

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

29 = 15 + n(B) - 7

n(B) = 29 - 15 + 7

n(B) = 14 + 7

n(B) = 21

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