A coin is tossed twice, what is the probability that atleast one tail occurs?

Explanation

To solve the problem of finding the probability that at least one tail occurs when a coin is tossed twice, we can follow these steps:

### Step 1: Determine the Sample Space
When a coin is tossed twice, the possible outcomes can be listed as follows:
- HH (Head, Head)
- HT (Head, Tail)
- TH (Tail, Head)
- TT (Tail, Tail)
...