If x is an integer, is x|x| < 2x?
1) x < 0
2) x = -10
OA is D
Can someone explain why statement 1 is sufficient please?
If x = -1, then x|x| = -1 and 2x = -2, so the answer is NO
But, if x = -3, then x|x| = -9 and 2x = -6, so the answer is YES
Therefore, this statement should be NOT SUFFICIENT. What am I missing?
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In my edition, the question stem reads:
If x is an integer, is x|x| < 2^x?
Check your text again...
With this question, (1) is sufficient because the left side of the inequality is negative while the right side is positive.
If x is an integer, is x|x| < 2^x?
Check your text again...
With this question, (1) is sufficient because the left side of the inequality is negative while the right side is positive.
Rey Fernandez
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With the version of question given ....
1 is insufficient to answer the problem as
x< 0 means x can take following values -1, -2 ,-3,-4 etc
with -1 lhs > rhs
-2 lhs = rhs
-3 lhs < rhs
hence there is no unique solution set for this...
option reduced to BCE
with
2. x =-10 is sufficeint enough to conclude hence B must be answer
???? i m correct on this.....
1 is insufficient to answer the problem as
x< 0 means x can take following values -1, -2 ,-3,-4 etc
with -1 lhs > rhs
-2 lhs = rhs
-3 lhs < rhs
hence there is no unique solution set for this...
option reduced to BCE
with
2. x =-10 is sufficeint enough to conclude hence B must be answer
???? i m correct on this.....