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# Find the sum of last three digits of S,where

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Manager
Joined: 25 Nov 2006
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Find the sum of last three digits of S,where [#permalink]

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03 Nov 2007, 13:33
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
Joined: 10 Jun 2007
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Re: sum of last three digits......!!!! [#permalink]

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03 Nov 2007, 15:50
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
Joined: 03 Oct 2006
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03 Nov 2007, 15:59
I think the answer is 3...?

I just did straight calculation and a little deduction towards the end to get the answer quicker.
Director
Joined: 11 Jun 2007
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Re: sum of last three digits......!!!! [#permalink]

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03 Nov 2007, 16:13
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
Current Student
Joined: 03 Oct 2006
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03 Nov 2007, 16:21
Damn! I added the the units column instead of multiplying...can't do anything right nowadays.
03 Nov 2007, 16:21
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# Find the sum of last three digits of S,where

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