Question
A @ B means ‘A is the husband of B’ A & B
means ‘A is the mother of B’ A # B means ‘A is the daughter of B’ If Q @ M & Y @ J # R & Z, then how is Y related to Z?Solution
The correct answer is C
If n(A) = 25, n(B) = 40 and n(A ∪ B) = 50, then n(A ∩ B) equals
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