SOLUTION: How many 2-digit numbers can be formed with the digits 1,2,3,4,5,6?

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Question 74471: How many 2-digit numbers can be formed with the digits 1,2,3,4,5,6?
Answer by scott8148(6628) About Me  (Show Source):
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If digits can only be used once, then there are 6 possibilities for the first digit and 5 possibilities for the second giving 6%2A5 or 30 possible 2-digit numbers.

If digits can be repeated, then the possibilities are 6%2A6 or 36.