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Source: — Data Sufficiency |
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by kevincanspain » Mon Jul 18, 2011 2:12 am
If s+t+u+x = 6 , none of these variables can be equal to 3, as it is impossible for the rest of them to be equal to 1: Thus two of them must be equal to 2 and the other two equal to 1. We can then conclude that r= 3
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by gmat25 » Mon Jul 18, 2011 2:17 am
Thanks for the replying, i got your point.
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by winniethepooh » Mon Jul 18, 2011 10:44 am
shouldn't the answer be C then?
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by HeintzC2 » Thu Jul 28, 2011 1:13 pm
we can deduce as stated in the previous comment, that s+t+u+x = 6, then r must be 3 because both s and t are 1 and 2 (doesn't matter which).

for statement (1): v+z = 6, the only option is for both v and z to equal 3. given that no number can be repeated in any row or column, the only remaining cell that can equal 3 is r.
therefore, statement (1) is also sufficient by itself.
making the correct solution D
winniethepooh wrote:shouldn't the answer be C then?
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