Given: A coin is tossed.

To Find: Find the total number of elementary events and a total number of events associated with the random experiment.

Explanation: When a coin is tossed, there will be two possible outcomes, Head(H) and Tail(T).

Since, the no. of elementary events is 2 {H, T}

But, we know, if there are n elements in a set, then the number of total element in its subset is 2n.

Therefore, the total number of the experiment is 4,

So, there are 4 subset of S = {H}, {T}, {H, T} and Փ

Hence, there are 4 total events in a given experiment.