Flipping a coin might seem simple, but there are some tricky things that can change how we think about the chances of getting heads or tails.

1. Coin Bias: If a coin is bent or heavy on one side, it might not be fair. This means we can’t always assume it has the same chance of landing on heads or tails.

2. Flipping Technique: How you flip the coin matters too. If you flip it hard or at a weird angle, it can change how it lands. This makes it hard to guess whether it will land on heads or tails.

3. Environmental Factors: Things like the wind or the kind of surface where the coin lands can also change the result.

Even with these challenges, if we have a normal, fair coin, the chance of landing on heads is still 50%. This means that we have one chance out of two to get heads, which we can write like this:

$P(\text{Heads}) = \frac{\text{Number of Heads Outcomes}}{\text{Total Outcomes}} = \frac{1}{2}$

However, if we flip the coin many times, we can start to see patterns and get a better idea of the results.