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Find the sum of last three digits of S,where

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Manager
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Joined: 25 Nov 2006
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Find the sum of last three digits of S,where [#permalink] New post 03 Nov 2007, 12:33
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Find the sum of last three digits of S,where S=871*873*875*878*881*883
VP
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Re: sum of last three digits......!!!! [#permalink] New post 03 Nov 2007, 14:50
Pzazz wrote:
Find the sum of last three digits of S,where S=871*873*875*878*881*883


Did u make this up?
Can you give answer choices?
Current Student
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 [#permalink] New post 03 Nov 2007, 14:59
I think the answer is 3...?

I just did straight calculation and a little deduction towards the end to get the answer quicker.
Director
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Re: sum of last three digits......!!!! [#permalink] New post 03 Nov 2007, 15:13
Pzazz wrote:
Find the sum of last three digits of S,where S=871*873*875*878*881*883


using the calculator the last three digits is 0.. so sum is zero. cant imagine this being on the test though.. what is the source?

in case anyone is curious the product looks like this:
454,434,797,879,039,000.00 :shock:
Current Student
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 [#permalink] New post 03 Nov 2007, 15:21
Damn! I added the the units column instead of multiplying...can't do anything right nowadays.
  [#permalink] 03 Nov 2007, 15:21
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Find the sum of last three digits of S,where

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