Quantitative Comparison Strategies Flashcards
7 cards from real GRE practice questions. Tap to flip, then mark Knew It or Still Learning โ missed cards come back until you master them.
Read the first 7 Quantitative Comparison Strategies flashcards as text
Given x is a nonzero number, Quantity A: x/x. Quantity B: x^0. Which is correct?
Answer: The two quantities are equal
For nonzero x, x/x = 1 and x^0 = 1, so both equal 1.
Quantity A: 7! / 6!. Quantity B: 6. Which is correct?
Answer: Quantity A is greater
7!/6! = 7, which is greater than 6.
Given a data set with standard deviation 0, Quantity A: the range of the data. Quantity B: 0. Which is correct?
Answer: The two quantities are equal
A standard deviation of 0 means all values are identical, so the range is also 0.
Quantity A: the probability of rolling an even number on a fair die. Quantity B: the probability of rolling a number greater than 3 on a fair die. Which is correct?
Answer: The two quantities are equal
Both events have 3 favorable outcomes out of 6, giving probability 1/2.
Given x < y < 0, Quantity A: x + y. Quantity B: xy. Which is correct?
Answer: Quantity B is greater
The sum of two negatives is negative while their product is positive, so xy is greater.
Quantity A: 30 percent of 90. Quantity B: 90 percent of 30. Which is correct?
Answer: The two quantities are equal
Both equal 27 because a% of b equals b% of a.
Given a square inscribed in a circle of radius r, Quantity A: the square's diagonal. Quantity B: 2r. Which is correct?
Answer: The two quantities are equal
The diagonal of an inscribed square is the circle's diameter, which equals 2r.