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যেকোনো জোড় পূর্ণসংখ্যার বর্গ সর্বদা কোন সংখ্যা দ্বারা বিভাজ্য?

A3
B5
C6
D4
Answer & Solution
Correct answer: D. 4
যেহেতু (2n)^2 = 4n^2, তাই যেকোনো জোড় সংখ্যার বর্গ 4 দ্বারা বিভাজ্য।
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