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How many numbers of 5 digits can be form...

How many numbers of 5 digits can be formed by the digits 1,2,2,1,3?

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To find the number of distinct 5-digit numbers that can be formed using the digits 1, 2, 2, 1, and 3, we can use the formula for permutations of a multiset. Here are the steps to solve the problem: ### Step 1: Identify the total number of digits and their frequencies We have the digits: 1, 2, 2, 1, 3. - The digit '1' appears 2 times. - The digit '2' appears 2 times. - The digit '3' appears 1 time. ...
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