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If `n(PnnQ) = 23, n(PuuQ) = 57` and `n(Q-P) = 26`, then `n(P -Q) = "_____"`.

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If `n(PnnQ) = 23, n(PuuQ) = 57` and `n(Q-P) = 26`, then `n(P -Q) = "_____"`.
A. 24
B. 54
C. 8
D. 14
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Correct Answer - C
`n(P - Q) = n(P) - n(P nn Q)`.
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