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6 raised to any positive integer power will Always give an integer that ends in '6' (meaning the unit place digit of that number would be 6). So such an integer, when divided by 10, would always give a remainder 6.

Here, each statement alone suffices to tell us that last digit of 6^x would be 6, hence remainder would be 6.

Hence D answer
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Yeah true. My bad.
I jumped to the conclusion after reading statement 1.

Sent from my Moto G (5S) Plus using GMAT Club Forum mobile app
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How does this change if it's not given x is an integer. Only positive.
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