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Bunuel
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Hello,I always make the same mistake while solving such questions. The approach I use is as follows (Do not: this is only for Statement 2).


J^2/2 = J
J/2=1
J=1

now, apparently, this isnt the correct approach and would love to know the insight why is it not correct?
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BusinessAdmin
Hello,I always make the same mistake while solving such questions. The approach I use is as follows (Do not: this is only for Statement 2).


J^2/2 = J
J/2=1
J=1

now, apparently, this isnt the correct approach and would love to know the insight why is it not correct?


Hi Business Admin,

We cannot cancel out j, because there is a possibility that J can take the value 0.

If we cancel out j, means we are ignoring j=0 possibility.
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AritraKundu
Statement 1: j can be anything. So, it is not sufficient
Statement 2: j^2/2=j
It is possible only if j=2 or -2
Here also, we cannot zero down to single answer so insufficient

Statement 1 and 2 together
-2-(-2)=0
2-2=0
This also giving us two answers

So, it is E
wrong reasoning but correct answer. it cannot be -2 as statement 2 will give us 4=-4 if j is taken as 2
the cases to consider are 2 and 0
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