GRE Math: Quantitative Reasoning Concepts
Key mathematical concepts and problem types tested on the GRE Quantitative Reasoning section.
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What is the only even prime number?
2
What is the sum of the interior angles of any triangle?
180 degrees
How is the median of a set with an even number of elements calculated?
The average (arithmetic mean) of the two middle terms when the set is ordered.
What is the formula for the circumference of a circle?
2 * pi * r (or pi * d)
In the linear equation y = mx + b, what does 'b' represent?
The y-intercept of the line.
What is the value of any non-zero number raised to the power of 0?
1
If an integer n is divisible by both 6 and 9, what is the smallest integer it must also be divisible by?
18
What is the relationship between the slopes of two perpendicular lines in a coordinate plane?
Their slopes are negative reciprocals (their product is -1).
If the ratio of boys to girls in a class is 3:5 and there are 40 students total, how many girls are there?
25
What is the probability of two independent events A and B both occurring?
The product of their individual probabilities: P(A) * P(B).
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