gmat prep

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gmat prep

by atulkumar79 » Thu Jun 25, 2009 11:04 am
Is s and t are 2 different numbers on the number line, is s+t equal to 0.

1. The distance between s and 0 is the same as the distance between t and 0.

2. 0 is between s and t.

OA A

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by Morgoth » Thu Jun 25, 2009 11:14 am
S+T = 0

only way this could be possible, when lsl = ltl, but either s or t has to be negative and other one has to be positive

Statement I

ls-0l = l0-tl
lsl = ltl

Sufficient.

Statement II

0 is between s and t,

s could be -2 and t could be 1

or

s could be -1 and t could be 1

In both cases 0 is between s and t.

Insufficient.

Hence A.

Hope this helps.

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by vaishalijain7 » Thu Jun 25, 2009 12:28 pm
Actually in this question I guess it's easy to miss that s and t are 2 different numbers so s cannot be equal to t and that's why 'A' is the answer.