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faifai0714
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halahpeno
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I get A also.

Statement 1:

Listing the cars as a, b, and c, you get: a+b+c = a + c + 1. It follows that b = 1. Sufficient

Statement 2:

There are 7 people in all the cars. This tells us a+b+c = 7, which can mean that a, b, c = 1, 2, 4; 1, 3, 3; 1, 1, 5; etc etc. Nothing helpful here.

Both statements together:

Tells us that a+b+c = 7 = a+c+1, such that b = 1. Nothing new here.

But seriously, where's the catch?
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Sumithra
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halahpeno
I get A also.

Statement 1:

Listing the cars as a, b, and c, you get: a+b+c = a + c + 1. It follows that b = 1. Sufficient

Statement 2:

There are 7 people in all the cars. This tells us a+b+c = 7, which can mean that a, b, c = 1, 2, 4; 1, 3, 3; 1, 1, 5; etc etc. Nothing helpful here.

Both statements together:

Tells us that a+b+c = 7 = a+c+1, such that b = 1. Nothing new here.

But seriously, where's the catch?


I go with A. But I don't understand why we should try both statements together when A is suff. I mean, if A is suff, then the answer could be either A or D why try C?
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halahpeno
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To cover all your bases. I just take a methodical approach to this stuff. Sometimes I think A, but when working it out, I realize I've missed something. It's just me being anal :lol:
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faifai0714
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OA is A.

You can still find the answer with C, but maybe we have to choose the least amount of information to find the answer when it comes to DS I guess.



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