$$\{ x \mid x \text{ is an odd whole number},\ x \u003c 11 \}$$

Question 1

Which of the following numbers is an irrational number?

Accepted Answer

$$\sqrt{2}$$

Question 2

Which set correctly represents all the letters in the word 'mathematics' using roster notation?

Accepted Answer

$$\{ m, a, t, h, e, i, c, s \}$$

Question 3

Which of the following numbers is NOT a whole number?

Accepted Answer

$$-3$$

Question 4

Which of the following is the correct set-builder notation for all odd whole numbers less than 11?

Accepted Answer

$$\{ x \mid x 	ext{ is an odd whole number},\ x \u003c 11 \}$$

Question 5

Which of the following numbers is both a rational number and an integer?

Accepted Answer

$$-4$$

Question 6

Which of the following statements is TRUE about the real number system?

Accepted Answer

All integers are rational numbers.

Question 7

Which of the following is a natural number?

Accepted Answer

$$6$$

Question 8

Which of the following numbers is NOT a rational number?

Accepted Answer

$$\sqrt{5}$$

Question 9

A scientist measures the length of a rod as $$\pi$$ centimeters. Which set does this measurement belong to?

Accepted Answer

Irrational numbers

Question 10

Which of the following numbers is an integer but NOT a whole number?

Accepted Answer

$$-1$$

Question 11

Which of the following best describes the set $$\{ 1, 3, 5, 7, 9 \}$$?

Accepted Answer

Odd whole numbers less than 11

Question 12

Which of the following numbers is a rational number but NOT an integer?

Accepted Answer

$$\frac{5}{2}$$

Question 13

Which of the following is the best description of the number $$0$$?

Accepted Answer

Whole number and integer

Question 14

A medical researcher records a patient's temperature as $$98.6$$ degrees Fahrenheit. Which set does this number belong to?

Accepted Answer

Rational numbers

Question 15

Which of the following numbers is NOT a real number?

Accepted Answer

$$\sqrt{-1}$$

Understanding Sets and Types of Real Numbers

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