56 Answered Questions for the topic gre exam

03/19/19

recommending books for GRE math subject test?
I wonder if anyone could recommend some books (other than Princeton Review) to prepare for the GRE math subject exam. I've heard that the REA books have lots of typos, though it has 6 practice... more
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03/19/19

How to solve Work->Break->Work pattern questions?
Machine/Person A: Works for 20 hours and take break for 4 hours (repeated cycle) Machine/Person B: Works for 40 hours and take break for 8 hours (repeated cycle) In X amount of hours ( say x is... more
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03/19/19

Combinations [fundemental counting principal]?
> How many 3-digit integers can be chosen such that none of the digits > appear more than twice and none of the digits equal zero? I have approached the following problem like this. 1. We... more
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03/19/19

A question from GRE math sub 9367, problem 59?
Two subgroups H and K of a group G have orders 12 and 30, respectively. Which of the following could NOT be the order of the subgroup of G generated by H and K? A. 30 B. 60 C. 120 D. 360 E.... more
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Gre Exam Algebra 2 Gre

03/19/19

If a = 3 + b, which of the following is true?
(I) a > b + 2.5 (II) a < b + 2.5 (III) a > 2 + b (A) I only (B) II only (C) III only (D) I and II only (E) I and III only The given answer is (A), (C), and (D). How come? My... more
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Gre Exam Gre Linear Algebra

03/19/19

Linear algebra book GRE Math Subject?
I am preparing for GRE Math Subject which I will take in October. Did anyone take this exam here? Please recommend some good book on abstract algebra and linear algebra. I can work out with... more
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Gre Exam Gre Probability

03/19/19

A GRE - Probability Question?
In a probability experiment, G and H are independent events. The probability that G will occur is r, and the probability that H will occur is s, where both r and s are greater than 0. Quantity A... more
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03/19/19

Is a good GRE score enough for a non-math graduate to be accepted in a decent pure mathematics graduate program?
I have a computer engineering degree , and i have studied several mathematics courses like single variable and multiples variables calculus , complex variables , probability , numerical analysis... more
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03/18/19

GRE Probability question?
How many 3-digit positive integers are odd and do not contain the digit 5 ? My attempt: 100-999 3 -digit integers, 900/2=450 odd numbers. Now how to calculate odd numbers which do not contain... more
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03/18/19

Function that preserves compactness?
Let S be a compact topological space, let T be a topological space, and let f be a function from S onto T . Which of the following conditions on f is the weakest sufficient condition to... more
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03/15/19

Combination GRE problem 25?
An appliance's model number consists of three alphanumeric characters. The first character must be one of 24 permissible letters of the alphabet. The next character is numeric, a digit from 1 to 9.... more
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03/14/19

GRE Practice Question Incorrect?
This is a sample GRE question. The answer claims that we cannot make an inference due to insufficient information. > *Compare the following quantities:* > > Of the 25 people in Fran’s... more
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03/14/19

GRE Permutation and geometry question?
Are there are formula showing relation between diagonal and no of sides of a polygon?
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03/14/19

How many 2-digit positive integers are there?
How many 2-digit positive integers are there such that the product of their two digits is 24? The answer given is four. I'm not certain if I understand this question correctly and need some... more
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Gre Exam Gre Soft Question

03/14/19

Is this Enough for the Math Subject GRE?
I have been studying for the math GRE for quite sometime now. I have been going through the princeton review and old GRE tests, and in fact without much very difficulty at all. As a way of getting... more
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03/14/19

Multivariable Calculus for GRE?
This is going to sound strange, but I am a third year math major who never took multivariable calculus (despite having taken courses on Galois and Lebesgue theory, etc). I plan to take the GRE next... more
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03/14/19

Is this GRE math problem wrong?
I'm working out of the Manhattan GRE test prep book and I've come across a question that I can't figure out why they chose the answer they did. "Perpendicular lines m and n intersect at point... more
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Gre Exam Statistics Gre

03/14/19

Easy GRE question: Statistics?
I'm not sure how to set this statistics problem when they give me a group of arbitrary values. Can someone help? A group of 20 values has a mean of 85 and a median of 80. A different group of 30... more
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03/13/19

How to multiply decimal with wholenumber?
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03/13/19

Intuition behind combination problem?
I came across this question on a GRE practice exam. I'm trying to build intuition behind how to correctly approach these types of problems: A reading list for a humanities course consists of 10... more
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Gre Exam Geometry Gre

03/13/19

A GRE Geometry Question?
P, Q, and R are three points in a plane, and R does not lie on line PQ. Which of the following is true about the set of all points in the plane that are the same distance from all three points?... more
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03/13/19

Confusion about calculating probability of at least one event occurring?
The probability that Tom will win the Booker prize is 0.5, and the probability that John will win the Booker prize is 0.4. There is only one Booker prize to win. What is the probability that at... more
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03/13/19

Is 440 a factor of 72840?
I would like to know how to solve the following question: Is 440 a factor of 72840? I would have thought that this involves dividing 72840 by 440 and seeing if it produces an integer. However, the... more
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Gre Exam Algebra 1 Gre Ratio

03/13/19

Distance and speed of two people walking 100 miles?
This is for GRE math prep. Can you explain why the answer to this is 54? Five hours after Sasha began walking from A to B, a distance of 100 miles, Mario started walking along the same road from B... more
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Gre Exam Gre Probability

03/13/19

GRE - Pobability Question?
One person is to be selected at random from a group of 25 people. The probability that the selected person will be a male is 0.44, and the probability that the selected person will be a male who... more
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