Which event is most likely to happen would it be getting a head from the single tall of the fair coin randomly picking a constant from the English alphabet or getting a six when rolling a single dice once or randomly picking a vowel letter from the English alphabet?

The most likely event to happen would be getting a head from flipping a fair coin. This is because there are only two possible outcomes when flipping a coin (heads or tails), making the probability of getting a head 1/2 or 50%.

In comparison, the probability of randomly picking a constant from the English alphabet is 21/26, as there are 21 consonants out of 26 total letters in the alphabet. This means there is a 80.77% chance of picking a consonant.

The probability of rolling a six on a single dice is 1/6 or approximately 16.67%.

Lastly, the probability of randomly picking a vowel letter from the English alphabet is 5/26, as there are 5 vowel letters out of 26 total letters in the alphabet. This means there is a 19.23% chance of picking a vowel.

Therefore, the event most likely to happen is getting a head from flipping a fair coin.