Is 'b' the median of three numbers a, b and c?
1) a*c=b
2) a+c=b
Confused whether its C or E. Please help. Don't have the OA.
1) a*c=b
2) a+c=b
Confused whether its C or E. Please help. Don't have the OA.
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Is b the Median?
Source: Beat The GMAT — Data Sufficiency |
-
smackmartine
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IMO C
Same reasoning as above!
Same reasoning as above!
Smack is Back ...
It takes time and effort to explain, so if my comment helped you please press Thanks button
It takes time and effort to explain, so if my comment helped you please press Thanks button
for a = -1 and c = 1/2 will satisfy! a+c = a*cwinny wrote:Is 'b' the median of three numbers a, b and c?
1) a*c=b
2) a+c=b
Confused whether its C or E. Please help. Don't have the OA.
so, numbers -1/2,-1,1/2 then median: -1
also a = 0, b = 0, c = 0, median = 0
Clearly,not sufficient.
Hence E!
Isn't this a Yes/No question. Doesn't it suffice to say that in both cases b is the median, as opposed to asking what is the value of b?n@resh wrote:for a = -1 and c = 1/2 will satisfy! a+c = a*cwinny wrote:Is 'b' the median of three numbers a, b and c?
1) a*c=b
2) a+c=b
Confused whether its C or E. Please help. Don't have the OA.
so, numbers -1/2,-1,1/2 then median: -1
also a = 0, b = 0, c = 0, median = 0
Clearly,not sufficient.
Hence E!
For -1,-1/2,1/2 - Median would be -1/2(b) and not -1(a)n@resh wrote:for a = -1 and c = 1/2 will satisfy! a+c = a*cwinny wrote:Is 'b' the median of three numbers a, b and c?
1) a*c=b
2) a+c=b
Confused whether its C or E. Please help. Don't have the OA.
so, numbers -1/2,-1,1/2 then median: -1
also a = 0, b = 0, c = 0, median = 0
Clearly,not sufficient.
Hence E!
Hence C
Oh, yeap...you are absolutely right @sl750. we no need to worry about the value.sl750 wrote:Isn't this a Yes/No question. Doesn't it suffice to say that in both cases b is the median, as opposed to asking what is the value of b?n@resh wrote:for a = -1 and c = 1/2 will satisfy! a+c = a*cwinny wrote:Is 'b' the median of three numbers a, b and c?
1) a*c=b
2) a+c=b
Confused whether its C or E. Please help. Don't have the OA.
so, numbers -1/2,-1,1/2 then median: -1
also a = 0, b = 0, c = 0, median = 0
Clearly,not sufficient.
Hence E!
Thanks for enlightening!
Consider the followingThe two statements will be satisfied only a=b=c=0. So answer is C
Statement 1:
а*c=b
0*0=0 b=0 => median
2*2=4 b=4 => not
hence NOT SUFFICIENT
Statement 2:
a+c=b
same cases as (1) apply.
0+0=0 and 2+2=4
hence, NOT SUFFICIENT
Together,
b=a=c=0 hence yes,
b=4 a=c=2 hence, not
Thus,
[spoiler] E BOTH INSUFFICIENT.
[/spoiler]
