sentence1: If x ∝ y/z ^ 2 , y ∝ ab ^ 2 and z ∝ b/a then what is the relation between x , a and b ? The answer has been given as b ^ 4/a ^ 3 . Is that correct ?
sentence2: Which are the best book for preparation of UES -LRB- UNIVERSITY ENTRY SCHEME -RRB- . ?