TestMagic Forums - View Single Post - A Couple of Hard Questions from a CAT Exam

abhishek_mumbai · 2009 May 27th, 05:57 PM

dissa,
sqrt(x^2)= x
not +x and -x

sqrt(9) = 3

if x^2 = 9
then x can be +3 and -3..

I also got C..

jsloan,
are you sure that C is wrong.. and what is b/n in a.. I do not see b in the question.

2009 May 27th, 05:57 PM	#4 (permalink)
abhishek_mumbai Done with GMAT - 700 Join Date: Apr 2009 Location: Pune, India Posts: 1,182	dissa, sqrt(x^2)= x not +x and -x sqrt(9) = 3 if x^2 = 9 then x can be +3 and -3.. I also got C.. jsloan, are you sure that C is wrong.. and what is b/n in a.. I do not see b in the question.