For how many different digits n is the two-digit number 6n divisible by n? (The expression 6n should be interpreted as a two-digit integer with tens digit 6 and units digit n, not as 6 times n.)
For how many different digits n is the two-digit number 6n divisible by n? (The expression 6n 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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