if a number is not an irrational number then it is
s) a rational number
b) a integer
c) a whole number
If a number is not an irrational number, then it falls into one of the other number categories.
To determine the answer, we need to have a clear understanding of each number category mentioned - rational numbers, integers, and whole numbers.
1. Rational numbers: These are numbers that can be expressed as a fraction, where both the numerator and the denominator are integers. Rational numbers include integers, fractions, and terminating or repeating decimals. For example, 1/2, -3, 5/4, and 0.75 are all rational numbers.
2. Integers: Integers are whole numbers (both positive and negative) and zero, without any fractional or decimal parts. For example, -3, 0, and 5 are all integers.
3. Whole numbers: Whole numbers are similar to integers, but they do not include negative numbers. Whole numbers include all positive integers and zero. For example, 0, 1, 2, 3, and so on, are all whole numbers.
Based on this information, the correct answer is:
a) a rational number
Since rational numbers encompass all numbers that can be expressed as fractions or integers, a number that is not irrational must be rational.
Thus, it's a rational number.
Note that integer and whole number are the same.