### GMAT Challenge Question

Thursday, February 19th, 2009

This week’s GMAT challenge from PrepForTests.com is a problem solving question.

If $\lineskip 1em \frac{x + 2}{x - 2} = y$, what is the value of $\lineskip 1em \textstyle x$ in terms of $\lineskip 1em \textstyle y$?

1. $\lineskip 1em 2 - y$
2. $\lineskip 1em \frac{2}{y}$
3. $\lineskip 1em \frac{y + 2}{y - 2}$
4. $\lineskip 1em \frac{2(y + 1)}{y - 1}$
5. $\lineskip 1em \frac{2(y - 1)}{y + 1}$

### GMAT Challenge Question

Thursday, February 12th, 2009

This week’s GMAT challenge from PrepForTests.com is a problem solving question.

An electric pump can fill a tank in 3 hours. Because of a leak in the tank it is taking 3.5 hours
to fill the tank. How many hours will it take for the leak can drain all the water of the tank when it is
full?

1. 19
2. 20
3. 21
4. 22
5. 23

### GMAT Challenge Question

Thursday, February 5th, 2009

This week’s GMAT challenge from PrepForTests.com is a problem solving question.

A policeman chases after a thief who has a 500m head start. They run at constant speeds, with the policeman running 1 km every 6 minutes and the thief 1 km every 10 minutes. How long will policeman take to catch up with the thief?

1. $\lineskip 1em \textstyle 3 \frac{1}{2}$ minutes
2. $\lineskip 1em \textstyle 7 \frac{1}{2}$ minutes
3. 10 minutes
4. 15 minutes
5. $\lineskip 1em \textstyle 17 \frac{1}{2}$ minutes

### GMAT Challenge Question

Thursday, January 29th, 2009

This week’s GMAT challenge from PrepForTests.com is a problem solving question.

There are four different pairs of shoes in a drawer. If two shoes are selected from these at random, what is the probability that the two selected will be a matching pair?

1. $\lineskip 1em \frac{1}{2}$
2. $\lineskip 1em \frac{1}{7}$
3. $\lineskip 1em \frac{1}{8}$
4. $\lineskip 1em \frac{1}{28}$
5. $\lineskip 1em \frac{1}{56}$

### GMAT Challenge Question

Thursday, January 22nd, 2009

This week’s GMAT challenge from PrepForTests.com is a data sufficiency question.

Work out which of the statements 1 and 2 are required to answer the question.

$\lineskip 1em \textstyle |x + y| < |x| + |y|$?

1. $\lineskip 1em x + y < 0$
2. $\lineskip 1em xy < 0$
1. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient
2. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient
3. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
4. EACH statement ALONE is sufficient
5. Statements (1) and (2) TOGETHER are NOT sufficient

### GMAT Challenge Question

Thursday, January 15th, 2009

This week’s GMAT challenge from PrepForTests.com is a data sufficiency question.

Work out which of the statements 1 and 2 are required to answer the question.

Is $\lineskip 1em \textstyle n$ an integer?

1. $\lineskip 1em \textstyle n^{3}$ is an integer
2. $\lineskip 1em \textstyle \sqrt[3]{n}$ is an integer
1. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient
2. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient
3. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient
4. EACH statement ALONE is sufficient
5. Statements (1) and (2) TOGETHER are NOT sufficient