यदि \(A={x:x\in\mathbb{N},;x\le 25,;x is odd}\) और (B={x:x\in\mathbb{N},;x\le 25,;\(3\mid x}), तो (|A\cap B|) कितना है\)?
If \(A={x:x\in\mathbb{N},;x\le 25,;x is odd}\) and (B={x:x\in\mathbb{N},;x\le 25,;\(3\mid x}), what is (|A\cap B|)\)?
Correct answer and explanation
A. (5)
Simple Explanation
(25) तक (3) के गुणज (3,6,9,12,15,18,21,24) हैं। इनमें विषम (3,9,15,21,25) नहीं, बल्कि (3,9,15,21) और (?) नहीं; कुल (4) है। / Multiples of (3) up to (25) are (3,6,9,12,15,18,21,24). The odd ones are (3,9,15,21), so the count is (4).
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