Q, Is X -ve number??
1, 9x > 10x
2, x+3 is +ve
the answer is A according to gmat off guide
my Q is its easy if we take into account only integers to arrive to the ans A.
but how do u decide not to check for fractions
i.e if x =1/90
then 1 becomes 1/9 > 1/10
which is true
does the word number in the question suggest to check only for intergers,
if we need to check for fractions will the Q be only
is X +ve ??
inequality-- data sufficiency
This topic has expert replies
-
- Legendary Member
- Posts: 1578
- Joined: Sun Dec 28, 2008 1:49 am
- Thanked: 82 times
- Followed by:9 members
- GMAT Score:720
if x = 1/90 then 9x = 9/90 = 1/10adeel wrote:Q, Is X -ve number??
1, 9x > 10x
i.e if x =1/90
then 1 becomes 1/9 > 1/10
which is true
??
10x = 10/90 = 1/9
and 1/10 < 1/9 so 1 doesnt hold
Charged up again to beat the beast