is iit jee 2012 gonna be hard ?
in past years which paper has been set by iit delhi?
please reply
is iit jee 2012 gonna be hard ?
in past years which paper has been set by iit delhi?
please reply

Let S={x:x belongs to R(√3+√2)^(x^2-4) - (√3-√2)^(x^2-4)=10}. Then n(S) is equal to-
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