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1000 CR test A, Q7

This topic has 4 member replies
ns88 Senior | Next Rank: 100 Posts Default Avatar
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1000 CR test A, Q7

Post Sat Apr 14, 2007 3:26 pm
1000 CR test A, Q7

Does this have to anything with Boolean logic?

I would appreciate any help that's explains the logic behind answer C.


7. If A, then B.
If B, then C.
If C, then D.

If all of the statements above are true, which of the following must also be true?

(A) If D, then A.
(B) If not B, then not C.
(C) If not D, then not A.
(D) If D, then E.
(E) If not A, then not D.

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Post Tue Sep 12, 2017 6:09 pm
I would go with option C because C and cause D.
If D is absent, then A cannot function as well. Thus, A is also absent. Using the same logic in this context, we can say if not D, then not A.

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aim-wsc Legendary Member
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Post Sat Apr 14, 2007 7:51 pm
We are building a thread for all 1000 CR docs http://www.beatthegmat.com/viewtopic.php?t=1893

Hope you check these before starting a new thread.
oh! by the way thanks, this problem was not listed in that thread so now I have added it... Smile

Similarly we have sp thread fo 1000 SC Very Happy

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Post Tue Sep 12, 2017 6:09 pm
I would go with option C because C and cause D.
If D is absent, then A cannot function as well. Thus, A is also absent. Using the same logic in this context, we can say if not D, then not A.

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aim-wsc Legendary Member
Joined
20 Apr 2006
Posted:
2470 messages
Followed by:
14 members
Upvotes:
85
Target GMAT Score:
801-
Post Sat Apr 14, 2007 7:51 pm
We are building a thread for all 1000 CR docs http://www.beatthegmat.com/viewtopic.php?t=1893

Hope you check these before starting a new thread.
oh! by the way thanks, this problem was not listed in that thread so now I have added it... Smile

Similarly we have sp thread fo 1000 SC Very Happy

_________________
Getting started @BTG?
Beginner's Guide to GMAT | Beating GMAT & beyond
Please do not PM me, (not active anymore) contact Eric.

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