allery1 থেকে উপরের দিকে গণনা করলে, প্রথম যৌগিক সংখ্যাটি কোনটি?
A3
B2
C1
D4
Answer & Solution
Correct answer: D. 4
4 = 2 x 2, এবং 2 ও 3 হল মৌলিক সংখ্যা, তাই 4 হল প্রথম যৌগিক সংখ্যা।
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