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What is the sum of 5 evenly spaced integers? (1.) The middle

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What is the sum of 5 evenly spaced integers? (1.) The middle [#permalink] New post 21 Nov 2009, 00:03
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56% (01:41) correct 44% (00:19) wrong based on 25 sessions
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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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Re: What is the sum of 5 evenly spaced integers? [#permalink] New post 21 Nov 2009, 00:38
apoorvasrivastva wrote:
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 :)


Evenly spaced integers = difference between any successive integers is equal.

For ex: 5 - 10 - 15 - 20 - 25 or 1, 2, 3, 4, 5, 6 or 2, 4, 6, 8 or 1, 3, 5, 7 or so on.

(1) The middle number is zero - 2 are below 0 and 2 are above 0. The sum is 0. Suff
(2) Exactly 2 of the integers are negative - the middle could be 0 or +ve. The sum is also could be 0 or +ve. Insuff..

A.
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Re: What is the sum of 5 evenly spaced integers? [#permalink] New post 22 Nov 2009, 09:51
(1.) The middle number is zero.
as the middle number is zero and the numbers are evenly spread the mean is 0. Hence the sum is 0. SUFF
(2.) Exactly 2 of the integers are negative.
Information on other three integers is missing. INSUFF

Hence A
Re: What is the sum of 5 evenly spaced integers?   [#permalink] 22 Nov 2009, 09:51
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What is the sum of 5 evenly spaced integers? (1.) The middle

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