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WAEC - Mathematics (2011 - No. 25)

Given that n(p) = 19, m(P \(\cup\) Q) = 38 and n(P \(\cap\) Q) = 7, Find n(C)
26
31
36
50

توضيح

n(P \(\cup\) Q) = m(P \(\cap\) C)

38 = 19 = n(C) - 7

n(C) = 38 - 12

= 26

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