IMO A:
A: wv = v^2 => v(w-v) = 0.
Either v = 0 or w = v. It is given that w and v are different. Hence v = 0. Sufficient
B: w = 2. Doesn't give any info about v. Hence insufficient.
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v=0
Source: Beat The GMAT — Data Sufficiency |
Agree with A
Tip: whenever you see "X and Y are different integers " in the stem
you would have one of the solutions to the eqtn as "X=Y"
hence look out which parts of the equation can be taken common
Tip: whenever you see "X and Y are different integers " in the stem
you would have one of the solutions to the eqtn as "X=Y"
hence look out which parts of the equation can be taken common
First the integers are different
[color=red]W is not equal to V [/color]
from II we can find V , V is not given
Take I
W*V = V^2
V(V-W) = 0 since W is not equal to V , V-W can not be equal to 0
Hence V = 0
[color=red]W is not equal to V [/color]
from II we can find V , V is not given
Take I
W*V = V^2
V(V-W) = 0 since W is not equal to V , V-W can not be equal to 0
Hence V = 0
