Question:medium

If the integers $m$ and $n$ are chosen at random between 1 and 100, then the probability that a number of the form $7^m + 7^n$ is divisible by 5, equals

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Always check cycle of powers in modulo problems.
Updated On: Apr 23, 2026
  • $\frac{1}{4}$
  • $\frac{1}{7}$
  • $\frac{1}{8}$
  • $\frac{1}{49}$
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The Correct Option is A

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