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System-of-Equations Sufficiency
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GMAT
DI.116 System-of-Equations Sufficiency
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The variables x and y are real numbers. The requested quantity is the value of x. Determine whether the requested value is uniquely fixed by the stated conditions. Statement (1): x + y = 10. Statement (2): (x - y)
2
= 4.
A
For the information provided, even the two statements together are insufficient using only the stated constraints.
B
For the information provided, each statement is independently sufficient using only the stated constraints.
C
For the information provided, exactly one statement is sufficient on its own using only the stated constraints.
D
For the information provided, neither statement alone is sufficient, but the two statements together are sufficient using only the stated constraints.
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