a craxy CR question

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diebeatsthegmat: Legendary Member; Posts: 1119; Joined: Fri May 07, 2010 8:50 amFollowed by: 3 members; Thanked: 29 times

by diebeatsthegmat » Sat Aug 28, 2010 12:35 am

hi guys, can you please help me understand the following question and dont forget to explain your answer choice. thanks indead....

If you have no keyboarding skills at all, you will not be able to use a
computer. And if you are not able to use a computer, you will not be able to
write your essays using a word processing program. If the statements above
are true, which one of the following must be true?
A. If you have some keyboarding skills, you will be able to write your essays
using a word processing program.
B. If you are not able to write your essays using a word processing program,
you have no keyboarding skills.
C. If you are able to write your essays using a word processing program, you
have at least some keyboarding skills.
D. If you are able to use a computer, you will probably be able to write your
essays using a word processing program.
E. If you are not able to write your essays using a word processing program,
you are not able to use a computer.

Source: Beat The GMAT — Critical Reasoning | Sat Aug 28, 2010 12:35 am

abhigang: Senior | Next Rank: 100 Posts; Posts: 92; Joined: Tue Jul 20, 2010 6:56 am; Thanked: 4 times

by abhigang » Sat Aug 28, 2010 12:45 am

diebeatsthegmat wrote:hi guys, can you please help me understand the following question and dont forget to explain your answer choice. thanks indead....

If you have no keyboarding skills at all, you will not be able to use a
computer. And if you are not able to use a computer, you will not be able to
write your essays using a word processing program. If the statements above
are true, which one of the following must be true?
A. If you have some keyboarding skills, you will be able to write your essays
using a word processing program. X --> Z (cannot say)
B. If you are not able to write your essays using a word processing program,
you have no keyboarding skills. Z --> not X (cannot say)
C. If you are able to write your essays using a word processing program, you
have at least some keyboarding skills. Z --> X (can say)
D. If you are able to use a computer, you will probably be able to write your
essays using a word processing program. Y --> Z (cannot say)
E. If you are not able to write your essays using a word processing program,
you are not able to use a computer. not Z --> not Y (cannot say)

IMO C.

The logic flows that :
no keyboard skills (not X) --> no use of computer (not Y)
no use of computer (not Y) --> no word processing program (not Z)

So essentially, it says, not X --> not Z.

Please look inline int he argument.

Only C says Z --> X.

reply2spg: Legendary Member; Posts: 1261; Joined: Sun Sep 14, 2008 3:46 am; Thanked: 27 times; GMAT Score:570

by reply2spg » Sat Aug 28, 2010 5:48 am

Only C makes the sense.

Sudhanshu
(have lot of things to learn from all of you)

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