allery2, 3, 5, ?, 11, 13 তালিকাটিতে একটি মৌলিক সংখ্যা অনুপস্থিত রয়েছে। কোনটি সেটি?
A6
B8
C7
D9
Answer & Solution
Correct answer: C. 7
5 এবং 11-এর মধ্যবর্তী মৌলিক সংখ্যাটি হলো 7, কারণ 6, 8 এবং 9 হলো যৌগিক সংখ্যা।
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