Which set or sets does the number 1 belong to?

Real numbers, Rational numbers, Integers, and Natural numbers

Integers and Natural Numbers

Real numbers, Integers, and Natural Numbers

Rational Numbers

option A

Real numbers, Rational numbers, Integers, and Natural numbers

Step-by-step explanation:

Real numbers: Any number that is rational or irrational

Example

real numbers consist of zero (0), the positive and negative integers (-3, - 1, 2, 4), and all the fractional and decimal values in between (0.4, 3.1415927, 1/2).

Integers: All negative, positive numbers including zero

Example

..., - 3, - 2, - 1, 0, 1, 2, 3, ...

Natural numbers: All positive numbers except for zero

Example

1, 2, 3, ...

Rational numbers: Any number that can be written as the ratio of two integers and that is terminating or repeating in decimal form.

1 is a rational number because it can be expressed as the quotient of two integers: 1 : 1.