doubt of a repeat

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sanju09: GMAT Instructor; Posts: 3650; Joined: Wed Jan 21, 2009 4:27 amFollowed by: 80 members; Location: India; Thanked: 267 times; GMAT Score:760

by sanju09 » Fri Feb 12, 2010 11:36 pm

If A, B, C, and D are all positive numbers, is the value of A - B greater than the value of C - D?

1. A + D = B + C

2. A and B are each greater in value than either C or D.

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The mind is everything. What you think you become. -Lord Buddha

Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com

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Source: Beat The GMAT — Data Sufficiency | Fri Feb 12, 2010 11:36 pm

ajith: Legendary Member; Posts: 1275; Joined: Thu Sep 21, 2006 11:13 pmFollowed by: 2 members; Location: Arabian Sea; Thanked: 125 times

by ajith » Sat Feb 13, 2010 7:23 am

sanju09 wrote:If A, B, C, and D are all positive numbers, is the value of A - B greater than the value of C - D?

1. A + D = B + C

2. A and B are each greater in value than either C or D.

Have a doubt of a repeat post

1. is sufficient A-B = C-D and hence the answer to the question is no

2) is Insufficient [ A, B, C, D can assume values in both ways 11,10, 1,2 or 11,10,2,1]

Hence A

Always borrow money from a pessimist, he doesn't expect to be paid back.

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vscid: Master | Next Rank: 500 Posts; Posts: 212; Joined: Sat Dec 01, 2007 4:19 pm; Thanked: 5 times

by vscid » Sat Feb 13, 2010 11:49 am

sanju09 wrote:If A, B, C, and D are all positive numbers, is the value of A - B greater than the value of C - D?

1. A + D = B + C

2. A and B are each greater in value than either C or D.

Have a doubt of a repeat post

what is your doubt?

The GMAT is indeed adaptable. Whenever I answer RC, it proficiently 'adapts' itself to mark my 'right' answer 'wrong'.

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sanju09: GMAT Instructor; Posts: 3650; Joined: Wed Jan 21, 2009 4:27 amFollowed by: 80 members; Location: India; Thanked: 267 times; GMAT Score:760

by sanju09 » Mon Feb 15, 2010 3:47 am

vscid wrote:
sanju09 wrote:If A, B, C, and D are all positive numbers, is the value of A - B greater than the value of C - D?

1. A + D = B + C

2. A and B are each greater in value than either C or D.

Have a doubt of a repeat post
what is your doubt?

Nice pic on your profile. I dimly remember that I have already posted this question here, not sure though. That's the doubt, pal.

The mind is everything. What you think you become. -Lord Buddha

Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com

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