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# sum of the first odd numbers???

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Intern
Joined: 26 Jul 2017
Posts: 1
sum of the first odd numbers???  [#permalink]

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28 Jul 2017, 05:50
00:00

Difficulty:

(N/A)

Question Stats:

100% (00:10) correct 0% (00:00) wrong based on 5 sessions

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the sum of the first n odd number is 121. what is n
a. 10
b. 11
c. 12
d. 13

I don't get this should i be using arithmetic series or something?

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Math Expert
Joined: 02 Sep 2009
Posts: 55274
Re: sum of the first odd numbers???  [#permalink]

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29 Jul 2017, 08:15
shotie23 wrote:
the sum of the first n odd number is 121. what is n
a. 10
b. 11
c. 12
d. 13

I don't get this should i be using arithmetic series or something?

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

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. 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: sum of the first odd numbers???   [#permalink] 29 Jul 2017, 08:15
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