AP BIOLOGY

Detailed explanation-1: -The probability of getting heads is half. It is already known that the probability is half/half or 50% as the event is an equally likely event and is complementary so the possibility of getting heads or tails is 50%.

Detailed explanation-2: -Suppose you have a fair coin: this means it has a 50% chance of landing heads up and a 50% chance of landing tails up.

Detailed explanation-3: -As you can see from the picture, the probability of getting one head and one tail on the toss of two coins is 0.5.

Detailed explanation-4: -These combinations are HHH, HHT, HTH, THH, TTH, THT, HTT, TTT. The number of combinations which have two heads and one tail are: HHT, HTH, TTH which makes them 3 in number.