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by arocks » Thu Oct 18, 2007 3:35 am
Pls explain the qu. below. Thanks.

OA - C
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Source: — Data Sufficiency |
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by samirpandeyit62 » Thu Oct 18, 2007 7:42 am
stmt 1 : s is to the right of 0

Well it may be or may not we cant say this

INSUFF

stmt 2: the distance between t & r is same as t & -s

this has two scenarios
a) r= -s here yes
b) t is midway bwteeen r & -s here no

insuff

combine:

s= +ve

-s will be to the left of s & so is r now both are equidistant from t & in the same direction hence r=-s

SUFF C
Last edited by samirpandeyit62 on Thu Oct 18, 2007 9:14 am, edited 1 time in total.
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Samir
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by jay2007 » Thu Oct 18, 2007 9:05 am
What is the OA?

IMO, statement 2 itself is sufficient.

distance between t and r = distance between t and -s
This implies r = -s.

Isn't this enough to say that 0 is between s and -s and hence r and s?
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by mendiratta » Thu Oct 18, 2007 10:19 pm
No we're not sure from the stem that whether s is -ve or +ve.
Imagine as scenario in which s is -ve and hence -s is +ve and it is also possible that 0 is to the right of t.

Therefore -s will be further to the right of t & 0. In this scenario distance between r & t and t & -s can also be equal.

________r_______s_______t____0___________-s_________________
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