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How many positive 2-digit odd numbers can be formed using 0,1, 2, 3, 4, 5 without repetition?

 Jan 30, 2021
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The ones digit must be one of 1, 3, or 5 so there are 3 choices

After selecting the first digit, there are 5 choices left but the first digit cannot be a 0 so there are 4 choices.

4*3=12 numbers

:D

 Jan 31, 2021

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