Arithmetic

Practice Questions

GMAT Quantitative Reasoning › Arithmetic

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1

What is the mean of the following data set in terms of and ?

$\left {a -x, a, a + x, a + 2x, 2a-x, 2a, 2a+x, 2a+2x \right }$

2

What is the median of the following numbers?

$\frac{1}{2}, \frac{1}{3},\frac{1}{4},\frac{1}{5},\frac{1}{6},\frac{1}{7}$

3

What is the mean of the following data set in terms of and ?

$\left {a -x, a, a + x, a + 2x, 2a-x, 2a, 2a+x, 2a+2x \right }$

4

What is the median of the following numbers?

$\frac{1}{2}, \frac{1}{3},\frac{1}{4},\frac{1}{5},\frac{1}{6},\frac{1}{7}$

5

The average of 10, 25, and 70 is 10 more than the average of 15, 30, and x. What is the missing number?

6

Presented with a deck of fifty-two cards (no jokers), what is the probability of drawing either a face card or a spade?

7

If $\dpi{100} \small x=\frac{1}{2}$ and $\dpi{100} \small y=\frac{1}{3}$ , which of the following is the smallest?

8

What is the mean of the following data set in terms of and ?

$\left {a -x, a, a + x, a + 2x, 2a-x, 2a, 2a+x, 2a+2x \right }$

9

Presented with a deck of fifty-two cards (no jokers), what is the probability of drawing either a face card or a spade?

10

A coin is flipped four times. What is the probability of getting heads at least three times?

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