Question

If n(A) = 15, n(AB) = 25, n(AB) = 8, then n(B) = ?​

Answer 1

Answer:

since, n(AUB)=n(A) + n(B) - n(AnB) 25 = 15+ n(B) - 8

33 = 15 + n (B)

so,n(B) = 18

(here , AnB means A intersection B)

Step-by-step explanation:

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