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Not repeating, it is 7*6*5*4 which is 840 ways

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There are 7 choices for each of four digits, right?

74 = 2401

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10y ago
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Wiki User

10y ago

If each can be used again, it is 7x7x7x7 or 2401 combinations. If not it is 7x6x5x4 or 840 combinations

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Q: How many 4 digit numbers combinations can be made using 1234567?
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