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
Giải thích
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