Mathematics, 16.10.2019 20:10 mcalepcrager
For how many different digits $n$ is the two-digit number $\underline{6}\underline{n}$ divisible by $n$? (the expression $\underline{6}\underline{n}$ should be interpreted as a two-digit integer with tens digit 6 and units digit $n$, not as 6 times $n$.
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For how many different digits $n$ is the two-digit number $\underline{6}\underline{n}$ divisible by...
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