Question

Classify the number: 1

a. Irrational, real
b. Whole, natural
c. Natural, whole, integer, rational, real
d. Whole

Answer 1

The correct classification for the number 1 is c. Natural, whole, integer, rational, real.

Step-by-step explanation:

The correct classification for the number 1 is c. Natural, whole, integer, rational, real.

To understand why, let's break down each term:

1. Natural numbers: These are the counting numbers, starting from 1. So 1 is a natural number.
2. Whole numbers: Whole numbers include all the natural numbers as well as 0. Since 1 is a natural number, it is also a whole number.
3. Integer numbers: Integers include all the whole numbers as well as their negatives. Since 1 is a positive whole number, it is also an integer.
4. Rational numbers: Rational numbers are numbers that can be expressed as a fraction, where the numerator and denominator are integers. The number 1 can be written as the fraction 1/1, which meets the criteria for being a rational number.
5. Real numbers: Real numbers include both rational and irrational numbers. Since 1 is a rational number, it is also a real number.