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r | s | t | ------------------ | u | v | w |

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Manager
Joined: 04 Jan 2008
Posts: 120
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r | s | t | ------------------ | u | v | w | [#permalink]  05 Sep 2008, 23:37
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Each of the letters in the matrix above represents one of the numbers 1, 2, or 3, and each of these numbers occurs exactly once in each row and exactly once in each column. What is the value of r?

(1) v + z = 6
(2) s + t + u + x = 6
Senior Manager
Joined: 28 Feb 2007
Posts: 306
Followers: 1

Kudos [?]: 32 [0], given: 0

Re: Zumit DS 012 [#permalink]  06 Sep 2008, 00:24
Another D. r=3.

st1) v=z=3 so s and t cannot be 3 but r.
st2) (r+s+t) + (r+u+x)=12
2r+s+t+u+x=12
2r=6 and r=3
Manager
Joined: 04 Jan 2008
Posts: 120
Followers: 2

Kudos [?]: 24 [0], given: 0

Re: Zumit DS 012 [#permalink]  06 Sep 2008, 22:49
OA is D. Bin 3 problem.
Re: Zumit DS 012   [#permalink] 06 Sep 2008, 22:49
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