Bernoulli random variable (RV) is one of the most basic discreet random variable. I intent to recall this RV along with the Binomial Random Variable (RV). I assume that you already know what a discreet random variable (RV) is. Let us begin!

Bernoulli RV
A Bernoulli RV is either 0 or 1. It is 1 when “something happens” and is 0 otherwise. The image below visualizes this mapping.