Answer:
The correct option is C) rational numbers
Step-by-step explanation:
Consider the provided number 1.68
Natural numbers: The natural numbers are 1, 2, 3, 4, 5,…
Whole number: Whole numbers are the set of natural numbers but starts with 0. i.e. 0, 1, 2, 3, 4, 5,…
Integers: Integers are the set of whole number and the negatives of the natural numbers, i.e, … ,-2, -1, 0, 1, 2, …
Rational number: A number is said to be rational, if it is in the form of p/q. Where p and q are integer and denominator is not equal to 0.
Irrational number: A number is irrational if it cannot be expressed be expressed by dividing two integers. The decimal expansion of Irrational numbers are neither terminate nor periodic.
Real numbers: All rational and Irrational numbers are called real number.
Now consider the provided number 1.68
The number has 2 digit after decimal point its means it is neither natural nor whole number, also it is not an integer.
The number 1.68 can be written in the form of p/q. Thus, it is a rational number.
As it is rational it can't be irrational. The number 1.68 is real number.
Hence, the correct option is C) rational numbers.
