Question
Download Solution PDFLet Q and R are two finite sets such that n(Q) = 36, n(R) = 40 and n(Q U R) = 50. Find n(Q ∩ R).
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven
n(Q) = 36, n(R) = 40 and n(Q U R) = 50
Calculation
n(Q U R) = n(Q) + n(R) - n(Q ∩ R)
⇒ 50 = 36 + 40 - n(Q ∩ R)
⇒ 50 = 76 - n(Q ∩ R)
n(Q ∩ R) = 26
Last updated on Jun 30, 2025
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