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oLahav’s Tests

GMAT: Quantitative Practice - Section I

A test by Oren Lahav.

Test Questions

Question

This test is designed to test how well you may score on the real GMAT Quantitative section. It contains the same amount and types of questions. Instructions for the data sufficiency problems are the same as all GMAT Data Sufficiency problems. Give yourself 40 minutes to compete this 20-question test. If you feel you've studied enough and are ready, take your best shot.
What is the smallest integer x for which (25^x) > (5^8)?

Answers

Correct	Answer Text
	3
	5
	8
	9
	4

Question

What percentage of people in a group have an outstanding student loan?
1. Of the women in the group, 23% have an outstanding student loan.
2.Of the men in the group, 65% do not have an outstanding student loan.

Answers

Correct	Answer Text
	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

Question

If the following numbers were written as repeating decimals, which would have the longest sequence of different digits?

Answers

Correct	Answer Text
	1/3
	41/99
	2/11
	23/37
	1/11

Question

My cat's weight in 2006 was 20% more than in 2005. How much was her weight in 2006?
1. She weighed 60 pounds in 2005.
2. Her weigh in 2006 was 12 pounds more than in 2005.

Answers

Correct	Answer Text
	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

Question

In this picture, z=30. What's x+y?

Photo

Answers

Correct	Answer Text
	230
	270
	260
	290
	250

Question

x, y, and z are integers. Which is greater, 2x-4y+z or 2x+4y-z?
1. y < 0
2. z > 0

Answers

Correct	Answer Text
	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

Question

f is a positive integer. What's the units digit of f?
1. f divided by 4 has a decimal of .25
2. f divided by 10 has a remainder of 7

Answers

Correct	Answer Text
	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

Question

A, B and C are points. Do AB and BC have the same length?
1. A, B and C make a right angled triangle with B as the right angle, and AC equals 20.
2. A and C lie in a circle with center B, and AC=7sqrt5.

Answers

Correct	Answer Text
	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

Question

If 5x+4y=-2 and 3x+6=0, what's y?

Answers

Correct	Answer Text
	-2/3
	2
	-3 and 1/3
	-2
	2/3

Question

If d is less than 1, is d greater than or equal to 0.5?
1. When d is rounded off to the nearest tenth, you get 0.5.
2. When d is rounded off to the nearest digit, you get 1.

Answers

Correct	Answer Text
	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

Question

Of 30 elephants, 14 had big teeth, 18 were females, and 3 had small teeth and were male. How many females had big teeth?

Answers

Correct	Answer Text
	14
	7
	9
	5
	13

Question

The average of a and b is 50, while the average of b and c is 70. What's c-a?

Answers

Correct	Answer Text
	40
	70
	20
	Impossible to figure out
	10

Question

At least 2/3 of the chromosomes of a 40-chromosomal gene in your body must be healthy in order for you to not develop Parkinson's disease. What's the maximum number of unhealthy genes you can have without having Parkinson's disease?

Answers

Correct	Answer Text
	16
	14
	12
	13
	15

Question

If an integer b is greater than 1, is b 2?
1. b has exactly 2 positive factors.
2. b is prime

Answers

Correct	Answer Text
	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

Question

Say x=25k for some odd prime k. How many even positive factors does x have (including x)?

Answers

Correct	Answer Text
	3
	6
	8
	2
	4

Question

The reciprocal of u equals the sum of the reciprocals of a and b. What's u in terms of a and b?

Answers

Correct	Answer Text
	1/(a+b)
	ab/(a+b)
	ab
	a+b
	(a+b)/ab

Question

a and b are integers. Is a+b odd?
1. a < 10
2. a=b

Answers

Correct	Answer Text
	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

Question

Keith Richard's salary is based on a fixed base salary plus a commission per song. If he plays 20 songs on one CD, what will be his total salary?
1.Last CD he played 16 songs.
2. Last week's salary was $670.

Answers

Correct	Answer Text
	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

Question

A zoo has G giraffes and H hippos. If I add 3 Hippos and 2 Giraffes and then select an animal at random, what's the probability I get a giraffe?

Answers

Correct	Answer Text
	(G+3)/(G+H+5)
	(G+3)/(H+2)
	G/H
	G/(G+H)
	(G+3)/(H+5)

Question

p is positive. If r is p percent of s, then in terms of p, s is what percent of r?

Answers

Correct	Answer Text
	100p
	1/100p
	100/p
	1/p
	10000/p

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oLahav’s Tests

GMAT: Quantitative Practice - Section I

A test by Oren Lahav.

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