Question

When two coins are flipped, the probability of getting two heads is ¼. What is the probability of not getting two heads?​

Answer 1

The probability of getting heads on the toss of a coin is 0.5. If we consider all possible outcomes of the toss of two coins as shown, there is only one outcome of the four in which both coins have come up heads, so the probability of getting heads on both coins is 0.25.