Which number is irrational? a. 0.3 b. [5 c. 0.777 d. 00.454445

Option B - is an irrational number.    

Step-by-step explanation:

Given : Numbers

To find : Which number is irrational?

Solution :

Rational numbers is defined as numbers which is written in form where p and q are integers and q is non-zero.

Irrational numbers is defined as numbers which is not written in form where p and q are integers and q is non-zero.  

A) 0.3

written as p/q form.

So it is a rational number.

B)

is not written as p/q form.

So it is an irrational number.

C) 0.777

written as p/q form.

So it is a rational number.

D) 0.454445

written as p/q form.

So it is a rational number.

Therefore, Option B is an irrational number.