A number line is shown in the question.
r s t
r, s and t are in the number line as shown above.
r is to the left of s and s is to the left of t.
On the number line shown above, is zero halfway between r and s?
1. s is to the right of zero.
2. The distance between t and r is same as the distance between t and -s.
Please move your mouse over the darkened spot below to view the answer.
I chose B
But the correct answer is C.
With statement 2, we can infer that r = -s, because r is to the left of s in the number line. So s can not be negative. If s were negative, r would be to the right of s. So, zero should be halfway between r and s. Case closed.
Your explanation is much appreciated.
Thanks
Paddy
GMAT Prep data sufficiency question - tricky?
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- cubicle_bound_misfit
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Hi Paddy,
you did almost correct only made the mistake of taking stmt 1 into account while considering stmt 2.
Let's conside the scenario when we take both the stmt together.
S is positive and r is left to it. now -s will be negative no.
as r is left to t also if the distance between r-t and r-(-s) is same -s and t has to be the same point
or r =-s hence SUFF
ans C.
regards,
you did almost correct only made the mistake of taking stmt 1 into account while considering stmt 2.
Let's conside the scenario when we take both the stmt together.
S is positive and r is left to it. now -s will be negative no.
as r is left to t also if the distance between r-t and r-(-s) is same -s and t has to be the same point
or r =-s hence SUFF
ans C.
regards,
Cubicle Bound Misfit
even i do not understand how could it be C. B is enough coz, no matter what number (positive or -ve) t-r = t-(-s) i.e. t-r = t+s which makes it s = -r which makes 0 to be in the middle of r and s.
I don't see how can the answer be C. If anyone can think of something i am missing, please help.
I don't see how can the answer be C. If anyone can think of something i am missing, please help.
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