Number Systems

Which of the following is an integer?

• -3

• 1/4

• -12.5

• 0.454545...

Which of the following statements is true?

• Every rational number is an integer.

• Every whole number is a natural number.

• Every irrational number is a whole number.

• Every rational number is a whole number.

Which of the following accurately describes the square root of 10?

• Rational

• Irrational

• Integer

• Whole number

Complete the following statement: pi is __________________

• both real and rational

• real but not rational

• rational but not real

• neither real nor rational

Complete the following statement: square root of 7 is ________.

• both a real and a rational number

• a real number, but not rational

• a rational number, but not a real number

• neither a real nor a rational number

The number 57 belongs to which of the following set(s) of numbers?

• Natural numbers only

• Natural, Whole and Integers only

• Natural, Whole, Integers, and Rational

• All of the following: Natural, Whole, Integers, rational and REAL

From the following set: {-√5.7, -9, 0, 5.25, 3i, √16}. Select the answer choice that shows the elements which are Natural numbers.

• -√5.7, -9, 0, 5.25, 3i, √16

• -√5.7, -9, 0, 5.25, 3i

• 3i

• Positive square root of 16

From the following set: {-√5.7, -9, 0, 5.25, 3i, √16} Select the answer choice that shows the elements that are Rational numbers.

• -√5.7, -9, 0, 5.25, 3i, √16

• -9, 0, 5.25, 3i, √16

• 3i

• -√5.7

Which of the numbers below is irrational?

• √169

• √4

• √16

• √3

Write the repeating rational number 0.1515... as a fraction.

• 85/100

• 15/75

• 15/99

• 25/50