Question

If two coins are flipped many times, how many heads would you expect to occur, on average?

Answer 1

If the conis are fair, you will get two heads 25% of the times that you flipped them.

Explanation:

When you flip 2 fair coins, 4 possible events can happen:

1. head, head

2. head, tail

3. tail, head

4. tail, tail

This means that each one of these events has a 1/4 equal probability of occurring.