alleryStart learning →If n(A) = 40, n(B) = 25 and n(A union B) = 55, then n(A intersect B) is
A15
B10
C20
D5
Answer & Solution
Correct answer: B. 10
From 55 = 40 + 25 - n(A intersect B), the overlap is 65 - 55 = 10.
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