Almost All Numbers Are Irrational

The probability that when we choose a number the number is divisible by $1$ is less than $1$ out of a trillion. Just look at a number line! There are infinite numbers between $0$ and $1$, for example. These numbers between the marks are called irrational numbers. The ones divisible by $1$ are rational.

Here is a plain number line. There are two marks, $A$ and $B$. Say $A$ is $0$ on the number line and $B$ is $1$. See the space in the middle of $A$ and $B$? There are infinite points in that region. There are infinite irrational points just between $0$ and $1$.

Though most of our world uses integer numbers, do not ever forget those irrational numbers—they're lurking around everywhere.

even though we could plot a integer on the number line, there are still some interesting fact about it. For instance, if you choose a point on the number line at random, the probability of you to get a point representing a rational number is 0.