Four digit numbers are formed by 4 different digits a,b,c,d( where none is zero) without any repetition of digits. prove that the sum of all such numbers when divided by the sum of the digits a,b,c,d gives the quotient 6666.

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- October 8th 2012, 02:35 AM #1

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- October 8th 2012, 05:44 AM #2

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