If A = {a, b, c) B = {b, d, e}C = {a, e, i, o, u} then n [A ∩ C] x – InterviewSolution

1.

If A = {a, b, c) B = {b, d, e}C = {a, e, i, o, u} then n [A ∩ C] x B] is(1) 18(2) 36(3) 9(4) 3

Answer»

(4) 3

A ∩ C = {a,b,c} ∩ {a, e, i, o, u}

= {a}

n(A ∩ C) = 1

n[(A ∩ C) x B] = n(A ∩ C) x n(B)

= 1 x 3

= 3

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