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Given that n(p) = 19, m(P \(\cup\) Q) = 38 and n(P \(\cap\) Q) =...

Mathematics
WAEC 2011
Given that n(p) = 19, m(P \(\cup\) Q) = 38 and n(P \(\cap\) Q) = 7, Find n(C)
  • A. 26
  • B. 31
  • C. 36
  • D. 50
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Correct Answer: Option A
Explanation
n(P \(\cup\) Q) = m(P \(\cap\) C)

38 = 19 = n(C) - 7

n(C) = 38 - 12

= 26
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