1 . A=xx ধনাত্মক পূরর্ণ সংখ্যা এবং x2<25, B=xx মোৌলিক সংখ্যা এবং x2<25, C=xx মোৌলিক পূর্ণ সংখ্যা এবং x2=25

• A. $\left\{1,2,3,4\right\}$
• B. $\left\{2,3,4\right\}$
• C. $\left\{2,3,4,5\right\}$
• D. $\varnothing$

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Answer: Option D

Explanation: