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How many prime numbers can be made with the digits 1 to 9 without repeating a digit?
Wiki User
∙ 11y ago
first A Prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself
so 1 isnt a prime
primes are 2 3 5 7 11 13 17 etc now by repeating digits if you mean the 1's in 11 then stop at 7 if you mean repeating a digit as in the tens spot of 11 and 13 stop at 11 and 3 and 13 are repating the 3 location....etc
Wiki User
∙ 11y ago
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1,023,456,789
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9875.
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24
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256
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18, if leading 0s are disallowed.
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Without repeating digits (not digets!) and without leading 0s, 600 of them.
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60
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468, 486, 648, 684, 846, 864.
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-58264
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86420
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It is a repeating decimal.
How many four-digit numbers can you make using the digits 1234 without repeating any of the digits in the same number?
4 x 3 x 2 ie 24
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5040
