Is x a negative number?
(1) x2 is a positive number.
(2) x × |y| is not a positive number.
OA - E
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Is x a negative number?
(1) x2 is a positive number.
Insufficient. x can be either positive or negative and still satisfy this statement. x cannot equal 0.
x=1, x2=1
x=-1, x2=1
(2) x X |y| is not a positive number.
Insufficient.
x can be either negative or 0.
(1) and (2)
From (1), x is either positive or negative. x is not 0.
From (2), x is either negative or 0.
Combined, x is negative.
IMO C
I noticed the OA is E. Where am I going wrong? Thanks.
(1) x2 is a positive number.
Insufficient. x can be either positive or negative and still satisfy this statement. x cannot equal 0.
x=1, x2=1
x=-1, x2=1
(2) x X |y| is not a positive number.
Insufficient.
x can be either negative or 0.
(1) and (2)
From (1), x is either positive or negative. x is not 0.
From (2), x is either negative or 0.
Combined, x is negative.
IMO C
I noticed the OA is E. Where am I going wrong? Thanks.
deepak123gmat wrote:Is x a negative number?
(1) x2 is a positive number.
(2) x × |y| is not a positive number.
OA - E
rephrase: x<0?
(1) x^2 = positive.
square of negative = positive. square of positive = positive
so x can either be positive or negative. Insufficient
(2) x * |y| <= 0 (warning as i'm reading: not a positive number can include 0 or negative number)
absolute value of a number (y) is always >= 0
if y = 0, |0| = 0 so x can be positive, negative or 0
if y = +, x can be 0 or negative
INSUFFICIENT
(1+2) from (1) x is either positive or negative. then from (2) x can be positive, negative or 0.........
so x can still be positive or negative
so i think the answer is E
[edit] i originally got C but thats because i omitted the possibility of x being positive in statement 2
.... yay 30 minutes later....
- rkanthilal
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Thanks, wahooza... This is my error also...wahooza wrote:
[edit] i originally got C but thats because i omitted the possibility of x being positive in statement 2
.... yay 30 minutes later....