In this article, we will learn how to calculate the probability when three coins are tossed together simultaneously. The possible outcomes when three coins are tossed simultaneously are:

- HHH
- HHT
- HTH
- THH
- TTH
- THT
- HTT
- TTT

There are eight total possible outcomes.

We can calculate the probability using the formula,

**Required Probability = Number of favourable outcomes/Total number of outcomes**.

Let us consider some problems for calculating 3 coin toss probability.

**Examples of calculating probability when three coins are tossed:**

**Example 1:**

Three coins are tossed simultaneously. Calculate the probability that we get exactly one head.

**Solution**: Here the favourable outcomes are HTT, THT, and TTH.

Since three out of eight outcomes are favourable by using the above formula we get,

Required Probability = 3/8 = 0.375

**Example 2:**

Three coins are tossed simultaneously. Calculate the probability that we get at least two tails.

**Solution**: Here the favourable outcomes are HTT, THT, TTH and TTT.

Since four out of eight outcomes are favourable by using the above formula we get,

Required Probability = 4/8 = ½ = 0.5

**Example 3:**

Calculate the probability that we get at most one tail when three coins are tossed simultaneously.

**Solution**: Here the favourable outcomes are HHH, HHT, THH, and HTH.

Since four out of eight outcomes are favourable by using the above formula we get,

Required Probability = 4/8 = ½ = 0.5