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Source: — Data Sufficiency |

by real2008 » Mon Jul 20, 2009 1:59 am
answer should be A
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by struggling_guy2001 » Mon Jul 20, 2009 2:06 am
Is x less than y?
(1) x-y+1<0

From the statement.... x-y<-1
=> x<y-1.

==> x is less than y.

(2) x-y-1<0

From the statement x-y<1
x<1+y

==> x is greater than y.

Hence each statement alone is sufficient to solve the question.

Post your comments, if it is wrong..
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by rohan_vus » Mon Jul 20, 2009 2:18 am
should be A..

Reason .. stmnt 1--->x-y+1<0 ==> x< y-1 ==> x < y..suff
stmnt 2 ---> x-y-1<0 ===> x < y + 1 ..not suff.. becoz
take e.g... 2< 2 + 1 for x = y
3 < 4 + 1 for x < y
2.5 < 2 + 1 for x > y... since x and y cud be any number and need not be an integer as its not specified
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by real2008 » Mon Jul 20, 2009 2:22 am
struggling_guy2001 wrote:Is x less than y?
(1) x-y+1<0

From the statement.... x-y<-1
=> x<y-1.

==> x is less than y.

(2) x-y-1<0

From the statement x-y<1
x<1+y

==> x is greater than y.

Hence each statement alone is sufficient to solve the question.

Post your comments, if it is wrong..
for stmt 2:

x<1+y

now say y=2;
then x<3

that means x can be 1, 2, 2.5 etc.

so nothing can be said about x while comparing with y.
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Thank You all...

by struggling_guy2001 » Mon Jul 20, 2009 2:27 am
Thank You all for your answers...
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