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# Integer y equals the sum of all multiples of 21 between 210 and 441

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Manager
Joined: 03 Jul 2017
Posts: 70
Location: India
Concentration: Finance, Economics
GPA: 3.4
Integer y equals the sum of all multiples of 21 between 210 and 441  [#permalink]

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07 Nov 2017, 02:28
00:00

Difficulty:

45% (medium)

Question Stats:

83% (02:45) correct 17% (01:34) wrong based on 6 sessions

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Integer y equals the sum of all multiples of 21 between 210 and 441, inclusive. What is the greatest prime factor of y?

A) 7
B) 11
C) 19
D) 31
E) 37

--== Message from GMAT Club Team ==--

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Math Expert
Joined: 02 Sep 2009
Posts: 47977
Re: Integer y equals the sum of all multiples of 21 between 210 and 441  [#permalink]

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07 Nov 2017, 02:57
abansal1805 wrote:
Integer y equals the sum of all multiples of 21 between 210 and 441, inclusive. What is the greatest prime factor of y?

A) 7
B) 11
C) 19
D) 31
E) 37

Discussed here: integer-y-equals-the-sum-of-all-multiples-of-21-between-210-and-235124.html

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

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Re: Integer y equals the sum of all multiples of 21 between 210 and 441 &nbs [#permalink] 07 Nov 2017, 02:57
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