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60 different numbers can be formed from the digits {1, 2, 3, 4, 5} is no repeats are allowed

Any of the first digits can be chosen for the first digit, leaving 4 for the next and 3 for the final digit. Thus there are 5 × 4 × 3 = 60 different possible such permutations of 3 digits from the 5.

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8y ago
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Q: How many 3-digit numbers can be formed from the 5 digits 1 2 3 4 5 if no digit may be repeated in a number?
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