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1. ${(2^{4})}^{2} - 1 ?$

Answer: Option D

Explanation:

(2^{4}) - 1 (2^{4} + 1) (2^{4} - 1) [a^{2} - b^{2} = (a + b) (a - b)] = (16 - 1) (16 - 1) = 1715 = 17 \times 5 \times 3 . : . সর্বোচ্চ মৌলিক সংখ্যা = 17

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