How many six digit numbers are possible by using the digits 1, 2, 3, 4, 5, 6, 7 without repetition such that they are divisible by 12?

How many six digit numbers are possible by using the digits 1, 2, 3, 4

1.	How many six digit numbers are possible by using the digits 1, 2, 3, 4, 5, 6, 7 without repetition such that they are divisible by 12?
Answer» First of all take 6 no. at a TIME and check their SUM as if it is divisible by 3 then ARRANGE them so that their last 2 digit is divisible by 4 then the no is divisible by 12 ex.764312 and check permutation of remaining 4 in starting no.s

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How many six digit numbers are possible by using the digits 1, 2, 3, 4, 5, 6, 7 without repetition such that they are divisible by 12?

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