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data sufficiency

by resilient » Tue Mar 04, 2008 10:24 pm
if U=v^4, what is the value of V/U?

1. u=16
2.uv=32

qa is b.

I got E
Appetite for 700 and I scraped my plate!
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by camitava » Wed Mar 05, 2008 2:27 am
Enginpasa1,
Look if u go with the stmt-1, u = 16 i.e. v^4 = 16. Here u don't know whether v = 2 or -2! So stmt-1 is not sufficient.
Now if u go with stmt-2, uv=32 so v^5 = 32 -> so v = 2. u can now get the value of u and thus u/v.
So I will go for B. Is my approach clear to u Enginpasa1?
Correct me If I am wrong


Regards,

Amitava
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