If you flip two coins 8 times, what is the best prediction possible for the number of times both coins will land on tails?

Question

The coins are fair, please answer quick

Answer 1

Each coin flip has a 1/2 chance of landing on heads or tails. For each two coin flips, there is a 1/4 chance that both coins will land on tails (1/2 * 1/2). If we add up the 1/4 probability from doing this test 8 times, we get that the number of times that both coins would land tails up is 2 out of the 8 times.