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Find the sum of last three digits of S,where

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Manager
Joined: 25 Nov 2006
Posts: 59

Kudos [?]: 2 [0], given: 0

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

Kudos [?]: 2 [0], given: 0

VP
Joined: 10 Jun 2007
Posts: 1436

Kudos [?]: 329 [0], given: 0

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?

Kudos [?]: 329 [0], given: 0

Current Student
Joined: 03 Oct 2006
Posts: 84

Kudos [?]: [0], given: 0

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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.

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Director
Joined: 11 Jun 2007
Posts: 910

Kudos [?]: 269 [0], given: 0

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

Kudos [?]: 269 [0], given: 0

Current Student
Joined: 03 Oct 2006
Posts: 84

Kudos [?]: [0], given: 0

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03 Nov 2007, 16:21

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03 Nov 2007, 16:21
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