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If a digit can be repeated there are 5 x 5 x 5 = 125 possible numbers

If a digit cannot be repeated there are 5 x 4 x 3 = 60 possible numbers.

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โˆ™ 2012-01-05 14:13:28
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Q: How many even 3-digit positive integers can be written using the digits 1 3 4 5 and6?
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