A2 Unit 1 Quiz

Which subset of real numbers has a "Q" as its symbol?

• Rational numbers
• Irrational numbers
• Real numbers
• Imaginary numbers

Irrational numbers use the following as its abbreviation:

• Irr

• IN
• I
• R

Which of the following numbers is the highest?

• √16

• 2.8

• √38

• π

Which of the following is/are integers?

• 1.5
• -2
• 3.14
• 0.99

In what subset of real numbers does a "0" first appear?

• Natural numbers
• Whole numbers
• Integers
• Rational numbers

In what subset(s) of real numbers do decimals/fractions belong?

• rational, integers

• rational, whole

• rational, natural/counting

• rational

Which of the following shows interval notation?

• (3, 5)
• [3, 5]
• {3, 5}
• 3, 5

Which notation is BEST for displaying the number of cats in the barn?

• Interval

• Inequality

• Roster

• Words

Which of the following correctly represents +/- infinity in interval notation?

• (-∞, ∞)
• [∞, -∞]
• (∞, -∞]

• [-∞, ∞)

Which two notations can represent all real numbers?

• Points on a number line

• Interval

• Roster

• Inequality