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Test Statement (1) Alone
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GMAT
DI.104 Test Statement (1) Alone
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x + y = 5. What is xy? Statement (1): x
2
+ y
2
= 13.
A
Sufficient: the sum and sum of squares determine the product.
B
Not sufficient: x and y are not individually determined.
C
Sufficient only if x and y are integers.
D
Not sufficient: xy cannot be found without solving for both variables.
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