Math Is Fun Forum

chetah

Member

Registered: 2008-02-15

Posts: 32

discrete math

How many distinct four-digit integers can one make from the digits 1, 3, 3,7,7,8?

John E. Franklin

Member

Registered: 2005-08-29

Posts: 3,588

Re: discrete math

102 positive and 102 negative #'s:
I don't know the #C# math yet.

3377 7733 7337 3773 3737 7373

3317 1733 3371 7133 1337 7331 1373 7313 3137 3731 3173 3713

3318 1833 3381 8133 1338 8331 1383 8313 3138 3831 3183 3813

3378 7833 3387 8733 7338 8337 7383 8373 3738 3837 3783 3873

7713 1377 7731 3177 1773 3771 1737 3717 7173 7371 7137 7317

7718 1877 7781 8177 1778 8771 1787 8717 7178 7871 7187 7817

7738 3877 7783 8377 3778 8773 3787 8737 7378 7873 7387 7837

1378 3178 1387 3187 8731 8713 7831 7813
1837 1873 8137 8173 3718 3781 7318 7381
1738 1783 7138 7183 3817 3871 8317 8371

Last edited by John E. Franklin (2008-03-20 14:48:10)

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