\(यदि (U={1,2,\ldots,24}), (A={x:x\) 2 से विभाज्य है\(}), (B={x:x\) 3 से विभाज्य है\(}), (C={x:x\) 4 से विभाज्य है\(}), तो (|(A\cup B\cup C)'|) कितना है\)?
\(If (U={1,2,\ldots,24}), (A={x:x\) is divisible by \(2}), (B={x:x\) is divisible by \(3}), (C={x:x\) is divisible by \(4}), what is (|(A\cup B\cup C)'|)\)?
Explanation opens after your attempt
A. (8)
Concept
Since \(C\subseteq A\), \(A\cup B\cup C=A\cup B\). \(|A\cup B|=12+8-4=16\), so the complement is (24-16=8).
Why this answer is correct
The correct answer is A. (8). Since \(C\subseteq A\), \(A\cup B\cup C=A\cup B\). \(|A\cup B|=12+8-4=16\), so the complement is (24-16=8).
Exam Tip
क्योंकि \(C\subseteq A\), इसलिए \(A\cup B\cup C=A\cup B\)। \(|A\cup B|=12+8-4=16\), अतः पूरक (24-16=8) है।
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