allery1 سے اوپر کی طرف گنتی، پہلا مرکب نمبر کون سا ہے؟
A3
B2
C1
D4
Answer & Solution
Correct answer: D. 4
4 2 x 2 کے برابر ہے، اور 2 اور 3 پرائم ہیں، لہذا 4 پہلا مرکب نمبر ہے۔
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