Question

vi. If n(P) = 60, n(Q) = 50, n(PUQ) = 90, then n (Q) = ......​

Answer 1

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Step-by-step explanation:

ANSWER ::

We know that

n(PUQ) = n(P) + n(Q) - n(P∩Q)

⟹ 90 = 60 + 50 - n(P∩Q)

⟹ n(P∩Q) = 110 - 90 = 20