alleryসমতা সম্পূৰ্ণ কৰা 3/7 = n/28; n কি?
A12
B14
C10
D21
Answer & Solution
Correct answer: A. 12
যিহেতু 28 = 7 × 4 গতিকে সমতুল্য লৱটো হ’ল n = 3 × 4 = 12।
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