Can some one help me out with which are the best coaching classes in Ahmedabad for IIT JEE preparation.
Can some one help me out with which are the best coaching classes in Ahmedabad for IIT JEE preparation.

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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