What is the difference between a rational and irrational number and what is a rational and irrational number

Question

And also what is/makes a integer?

In: 0

Answer 1

An integer is a whole number; 1, 42, 1,299,340 these are all integers.

A rational number is one that can be expressed as a fraction; 0.5=1/2, 0.75=3/4 etc.

An irrational number cannot be expressed as a fraction, for example pi has an infinite number of decimal places and so therefore cannot be expressed as a fraction.