## GMAT: Data Sufficiency

If x and y are distinct positive integers, what is the value of x^4 – y^4?
1) (y^2 + x^2)(y + x)(x – y) = 240
2) xy = yx and x > y
A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D) E ACH statement ALONE is sufficient.
E) Statement (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and

## GMAT: Problem Solving

Ben needs to form a committee of 3 from a group of 8 engineers to study design improvements for a product. If two of the engineers are too inexperienced to serve together on the committee, how many different committees can Ben form?
A. 20
B. 30
C. 50
D. 56
E. 336

## GMAT: Probability Question

A certain consulting firm employs 8 men and 4 women. In March, 3 employees are selected at random to represent the company at a convention. What is the probability that the representatives will NOT all be men?

A. 14/55
B. 3/8
C. 41/55
D. 2/3
E. 54/55

## GMAT: Problem Solving Question

If –2 < a < 11 and 3 < b < 12, then which of the following is NOT true?
A. 1 < a + b < 23
B. –14 < a – b < 8
C. –7 < b – a < 14
D. 1 < b + a < 23
E. –24 < ab < 132

## GMAT: Percentage Question

If m > 0, y > 0, and x is m percent of 2y, then, in terms of y, m is what percent of x?

A. y/200
B. 2y
C. 50y
D. 50/y
E. 5000/y

## GMAT: Question of the Day!!!

A car dealership has 40 cars on the lot, 30% of which are silver. If the dealership receives a new shipment of 80 cars, 40% of which are not silver, what percent of the total number of cars are silver?

A.  35%

B. 37.5%

C. 45%

D. 47.5%

E. 50%

## GMAT: Geometry Data Sufficiency

(1) At least two of the four angles are right angles.
(2) At least three of the four angles are right angles.

A. Statement 1 ALONE is sufficient but statement 2 alone is not sufficient.
B. Statement 2 ALONE is sufficient but statement 1 alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements 1 and 2 TOGETHER are NOT sufficient.

## GMAT: Data Sufficiency

What is the value of x?

(1) |x| = 4
(2) x^2 – 16 = 0

A. Statement 1 ALONE is sufficient but statement 2 alone is not sufficient.
B. Statement 2 ALONE is sufficient but statement 1 alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement alone is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements 1 and 2 TOGETHER are NOT sufficient.

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