in actual cat 2002 question paper, the question(data sufficiency) - "is x=y" how can it be solved? wen i solved, i could also use statement B for solving, whereas in the key they used a diffrent method and i used a different one. the qn and d method i used for statement B is as follows:
is x=y?
A. (x+y)(1/x + 1/y)=4
B. (x-50)^2 = (y-50)^2 in statement B, y cant we take sq roots on both sides n then say tht x=y??? plz help