\(यदि (A={x:x\) is a multiple of \(3,x\le 15}) और (B={x:x\) is a multiple of \(5,x\le 15}) हैं, तो (A\cup B) क्या है\)?
\(If (A={x:x\) is a multiple of \(3,x\le 15}) and (B={x:x\) is a multiple of \(5,x\le 15}), what is (A\cup B)\)?
Explanation opens after your attempt
Correct Answer
A. ( {3,5,6,9,10,12,15} )
Concept
\(A=\{3,6,9,12,15\}\) and \(B=\{5,10,15\}\), so the union has all distinct elements. Write (15) only once.
Why this answer is correct
The correct answer is A. ( {3,5,6,9,10,12,15} ). \(A=\{3,6,9,12,15\}\) and \(B=\{5,10,15\}\), so the union has all distinct elements. Write (15) only once.
Exam Tip
\(A=\{3,6,9,12,15\}\) और \(B=\{5,10,15\}\), इसलिए संघ में सभी अलग-अलग अवयव हैं। (15) को एक बार लिखें।
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