Given that n p 19 m P cup Q 38 and n P cap Q 7 ... - WAEC Mathematics 2011 Question
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
correct option: a
n(P \(\cup\) Q) = m(P \(\cap\) C)
38 = 19 = n(C) - 7
n(C) = 38 - 12
= 26
38 = 19 = n(C) - 7
n(C) = 38 - 12
= 26
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