If n is a positive integer and the tens digit of n+8 is 6, what is the tens digit of n?
(1) The units digit of n is a prime number
(2) The tens digit of n-8 is 4
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(1) The units digit of n is a prime number
(2) The tens digit of n-8 is 4
[Reveal] Spoiler:
Any better approach for statement 2?