Which event is most likely to happen

Getting a 6 when rolling a single dice once
Getting a head from a single toss of a fair coin
Randomly picking a constant on the alphabet
Randomly picking a vowel in the alphabet

1 answer

Getting a head from a single toss of a fair coin is the most likely event to happen, as there are only two possible outcomes (heads or tails) with equal probability. The probability of getting a head is 1/2 or 50%.