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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 how many 5-digit numbers can be formed using the digits 1, 2, 2, 1, and 3, we can use the formula for permutations of multiset. Here are the steps to solve the problem: ### Step 1: Identify the total number of digits and their repetitions 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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