Bunuel wrote:

Is xy > 6 ?

(1) 2 ≤ x ≤ 4 , 3 < y < 5

(2) x – y = 0

Target question: Is xy > 6 ? Statement 1: 2 ≤ x ≤ 4 , 3 < y < 5 The LEAST possible value of x is 2.

If it were possible for y to equal 3, then xy = (2)(3) = 6

However, it is NOT possible for y to equal 3, since the statement tells us that y is GREATER THAN 3.

So, the least possible value of xy must be greater than 6.

So, we can be certain that

xy > 6Since we can answer the

target question with certainty, statement 1 is SUFFICIENT

Statement 2: x – y = 0 There are several values of x and y that satisfy statement 2. Here are two:

Case a: x = 3 and y = 3, in which case xy = (3)(3) = 9. In this case,

xy IS greater than 6Case b: x = 1 and y = 1, in which case xy = (1)(1) = 1. In this case,

xy is NOT greater than 6Since we cannot answer the

target question with certainty, statement 2 is NOT SUFFICIENT

Answer: A

Cheers,

Brent

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Brent Hanneson – GMATPrepNow.com

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