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# What is the sum of all the odd consecutive numbers b/n 460

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Manager
Joined: 08 Jul 2006
Posts: 89
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What is the sum of all the odd consecutive numbers b/n 460 [#permalink]

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24 Sep 2006, 10:35
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

What is the sum of all the odd consecutive numbers b/n 460 and 600?

If you're like me, numer property questions, similar to the one above, always seem to break you in half. On my personal quest to demistify and attack these question-types, here's a link that has helped me considerably.

If it helps you, don't thank me...let's just say we're in this together.

The answer is 37100 by the way.
Senior Manager
Joined: 31 May 2006
Posts: 376
Location: Phoenix AZ
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24 Sep 2006, 13:53
THe formula for Sum of an AP is

n/2 [2a + (n-1)d]

= 70/2 [ first + last]
= 35 [1060]
= 37100
24 Sep 2006, 13:53
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