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Qn #1968
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The number of ordered pairs $(m,n)$, $m,n\in{1,2,\ldots,100}$ such that $7^m+7^n$ is divisible by $5$ is
A.
$1250$
B.
$2000$
C.
$2500$
D.
$5000$
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❓ Question: The number of ordered pairs $(m,n)$, $m,n\in{1,2,\... | TANCET Group Studies | Tancet Group Studies