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How many integers are divisible by 3 are there between 10!

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How many integers are divisible by 3 are there between 10! [#permalink] New post 02 Nov 2007, 06:46
How many integers are divisible by 3 are there between 10! and 10! + 20 inclusive?

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 [#permalink] New post 02 Nov 2007, 09:36
Answer would be 7

Since it is 10! it will be a multiple of 3 (10*8*7*6*5*4*3*2*1)

so since first number is divisible by 3 there will be six more numbers.

Therefore total 7 Nos

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 [#permalink] New post 02 Nov 2007, 09:38
i concur with 7.. you can't forget to include 10!
  [#permalink] 02 Nov 2007, 09:38
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How many integers are divisible by 3 are there between 10!

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