Types Of Numbers

The video tutorial introduces the classification of numbers in mathematics, focusing on real numbers, which include positive, negative, zero, decimals, and fractions. It distinguishes between rational numbers, which can be expressed as fractions, and irrational numbers, like pi and e, which cannot. The tutorial further breaks down rational numbers into natural numbers and integers, discussing the inclusion of zero. A mnemonic, 'Now What Is Real,' is suggested to remember the order of number categories. The video concludes by encouraging further exploration of mathematics.

Which of the following is NOT considered a real number?

• Square root of negative 1

• Pi

• Zero

• Fraction

What characteristic defines a rational number?

• It has a non-repeating decimal expansion

• It can be written as a fraction

• It is always positive

• It is always a whole number

Which of the following is an example of an irrational number?

• Square root of 2

• 3.14

• 0.333...

• 1/2

What is the main difference between natural numbers and whole numbers?

• Natural numbers include fractions

• Whole numbers include zero

• Natural numbers include negative numbers

• Whole numbers are only positive

Which mnemonic can help remember the order of number types?

• Now What Is Real

• Real Numbers Are Great

• Numbers Are Rational

• Whole Numbers Are Real