Question:
10ⁿ+3(4ⁿ⁺²)+5 is divisible by (nN):
10ⁿ+3(4ⁿ⁺²)+5 is divisible by (nN):
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Check divisibility using modular arithmetic.
Updated On: Mar 17, 2026
- 7
- 5
- 9
- 17
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The Correct Option is B
Solution and Explanation
Each term is divisible by 5:
10ⁿ\equiv0, 4ⁿ⁺²(-1)ⁿ⁺², 5\equiv0±od5
Hence the expression is divisible by 5.
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