To determine the probability of getting 3 tails when tossing a coin three times, we can use the fundamentals of probability.
1. **Total Outcomes**: When we toss a coin, there are two possible outcomes for each toss: heads (H) or tails (T). When tossing the coin three times, the total number of outcomes can be calculated as follows:
- For the first toss: 2 outcomes
- For the second toss: 2 outcomes
- For the third toss: 2 outcomes
So, the total number of outcomes = 2 × 2 × 2 = 8.
2. **Favorable Outcomes**: The favorable outcome for our question is getting tails on all three tosses, which is represented as TTT. This is just one specific outcome.
3. **Calculating Probability**: Probability is calculated by dividing the number of favorable outcomes by the total number of outcomes. Here, we have:
Probability = (Number of Favorable Outcomes) / (Total Outcomes) = 1/8.
4. **Conclusion**: Thus, the probability of getting 3 tails when tossing a coin three times is 1/8 or 0.125, which corresponds to a 12.5% chance of this occurring.