# How do you know if it is rational or irrational?

## How do you know if it is rational or irrational?

Answer: If a number can be written or can be converted to p/q form, where p and q are integers and q is a non-zero number, then it is said to be rational and if it cannot be written in this form, then it is irrational.

### Is 1.25 rational or irrational?

1.25 is a rational number. A rational number is any number that can be written as a fraction.

#### Is 3.14 a rational number?

The number 3.14 is a rational number. A rational number is a number that can be written as a fraction, a / b, where a and b are integers.

Is negative 5 rational or irrational?

Negative 5, or -5, is a rational number. Rational numbers can be either positive or negative.

Is 2.5 A irrational number?

The decimal 2.5 is a rational number. The decimal 2.5 is equal to the fraction 25/10.

## Is 74.721 a rational number?

74.721 is an Irrational number.

### Is 3 a rational number?

Explanation: A rational number is a number, which can be expressed as a fraction. Since 3 can be expressed as 3=31=62=124 and so on, it is a rational number.

#### Is 1.24 a rational number?

1.24 =124/100 is rational number, if we want we can also convert into sinpleast form is 31/25.

Is 0.3333 a rational number?

The decimal 0.3333 is a rational number. It can be written as the fraction 3333/10,000.

Is 3.141414 A irrational number?

Option (d) 3.141141114 is an irrational number.

## Is √ 3 an irrational number?

The square root of 3 is an irrational number. It is also known as Theodorus’ constant, after Theodorus of Cyrene, who proved its irrationality.

### Is negative 3 a rational number?

−3 is negative so it is not a natural or whole number. Rational numbers are numbers that can be expressed as a fraction or ratio of two integers. Rational numbers are denoted Q . Since −3 can be written as −31 , it could be argued that −3 is also a real number.