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If n is a positive integer, what is the tens digit of n?
(1) The hundreds digit of 10n is 6.
(2) The tens digit of n + 1 is 7.
Guys please explain If n is a positive integer how come we know that it is 2 digits or 3 digits integer or maybe 1 digit integer?
(1) The hundreds digit of 10n is 6. why it cant be 3600 for example?