What is the sum of evenly spaced integers?

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apoorva.srivastva
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Topic: What is the sum of evenly spaced integers?
PostSat Nov 21, 2009 1:01 am
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What is the sum of 5 evenly spaced integers?

(1.) The middle number is zero.
(2.) Exactly 2 of the integers are negative.

What is the meaning of evenly spaced integers...doest it necessarily mean consecutive intergers or the intergers are at equal distance from each other!!

Please explain the reasoning in getting the answer to this DS!!

OA follows in some time :)
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palvarez
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PostSat Nov 21, 2009 1:39 am
evenly spaced = arithmetic progression.

(1) middle number = 0; the sum = 0, Sufficient.

(2) Insufficient
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PostSat Nov 21, 2009 2:05 am
palvarez wrote:
evenly spaced = arithmetic progression.

(1) middle number = 0; the sum = 0, Sufficient.

(2) Insufficient
OA is A
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hmon6710moneh
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PostSat Nov 21, 2009 12:44 pm
Agreed, ans is A.

1) since zero is the middle value of 5, the two positive will be essentially be canceled by its equivalent neg value, receptively. Sufficient

2) Simply find two examples that have different sums to make it Insufficient.

-4,-2,0,2,4 = 0
-3,-1,1,3,5 = 5
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