# Questions tagged [gre-exam]

For questions relevant to the general or subject-specific Graduate Record Examination, abbreviated GRE.

516 questions
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### Determining whether one area is greater or equal to another

This problem was in my GRE practice textbook Their answer was that the two quantities are equal, but I keep on getting a different answer. Let $\overline{BC} = y$ and $\overline{AE}=x$. Then it ...
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1answer
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### GRE 9768 #60 Boolean non-commutative rings: Prove $(-s)^2=s^2$ without commutativity.

GRE 9768 #60 Ian Coley's approach is to prove $(I)$ and $(I) \implies (II) \implies (III)$ In proving $(I)$, how do we prove $$(-s)^2=s^2$$ without commutativity (but with $s=s^2$, if need ...
1answer
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### How do I know the definition of rings or of anything on the GRE given that definitions can vary?

How do I know the definition of rings or of anything on the GRE given that definitions can vary? :| Context is rings: GRE 0568 #66: On whether or not exactly 2 right ideals give a non-commutative ...
1answer
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### How does the notation of limits read in plain English?

How does the following notation read in plain English: $$\lim\limits_{x \to \infty \\ y \to \infty} F(x, y) = 1$$ As far as I can read: If $x$ and $y$ approaches $\infty$, the value of ...
0answers
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### GRE probability - number of ways to select numbers in a range

Note: I am aware a solution already exists to this question on SE, but I am questioning why the approach I am using here is incorrect / incomplete. The only contents of a container are 10 disks ...
1answer
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### If $x+3$ is positive, then which one of the following must be positive?

See: Nova GRE Math Bible. Page-$235$. Problem#$09$ If $x+3$ is positive, then which one of the following must be positive? (A) $x-3$ (B) $(x-3)(x-4)$ (C) $(x-3)(x+3)$ (D) $(x-3)(x+4)$ ...
1answer
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### Alternative resolution to find a ratio from averages.

Problem: A club sold an average(arithmetic mean) of 92 raffle tickets per number. Among the female members, average number sold was 84, and among the male members, the average number sold was 96. What ...
3answers
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### How many cases on a GRE question

This is more or less a question about how many cases I should be trying in general on the quantitative section of the GRE. I got this question wrong and it is because I did not try enough cases, so ...
4answers
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### What does it mean by “odds that an event will occur is $2$ to $3$”?

What does it mean by odds that an event will occur is $2$ to $3$?
1answer
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