GWD 18-9

knight9514

Q9:

Is x < 0 ?

(1) x³ < x²

(2) x³ < x⁴

^{ANS : C}

knight9514

i  see  !!thanks  !!!!

mindfrees

1. x^2(x-1)<0 => x<1 && x<>0 insufficient

2. x^3(1-x)<0 => x<0 || x>1 insufficient

1&2: x<0 DONE!