GMAT PREP Quan #18

[li.maor]

can you help with this one?
the OA is E



thanks
L

[bineeshnair4u]

1) x4 >= 1 any positive number greater than 1 will statisfy.. not finite
2) x3 <= 25 any negative number will statisfy.. not finite
3) x2 >= 16 same reasoning as (1)
4) 2 <= |x| <= 5 u gotta take 2<= x <= 5 and 2 <= -x <= 5 first is finite but second gives u x <= -2 and x >= 5 not finite
5) 2 <= 3x + 4 <= 6  -(2/3) <= x <= (2/3) finite solution

Ans E

[bineeshnair4u]

correction
4) 2 <= |x| <= 5 u gotta take 2<= x <= 5 and 2 <= -x <= 5 first is finite but second gives u x <= -2 and x >= -5 not finite

[li.maor]

thanks
I was not sure why x=2/3 is a line at all (for sure its finite) when x is in fact a point on the number line??.

L

[bineeshnair4u]

Glad that i was able to help u...

[RonPurewal]

search the forum, please.

which-of-the-following-inequalities-has-a-solution-set-that-t12129.html

please post any further questions in that thread; this one is now locked.