alleryতলৰ কোনটো সংখ্যাৰ যোৰা পৰস্পৰ মৌলিক?
A12 আৰু 18
B14 আৰু 21
C8 আৰু 15
D20 আৰু 25
Answer & Solution
Correct answer: C. 8 আৰু 15
8 আৰু 15-ৰ 1-ৰ বাহিৰে আন কোনো ভাজক উমৈহতীয়া নহয়, আনহাতে আন যোৰাবোৰৰ উমৈহতীয়া ভাজক 6, 7 বা 5।
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