# A fair coin is tossed four times. What is the probability that the sequence of tosses is HHHT? ?

### 7 Answers

- 1 month ago
None of the answers so far, allow for unconventional results. Such as settling on edge or not landing at all. Oh - and they ignore schrodinger principle, where the coin is captured in flight and exists in an indeterminate state. But......this is why I got into trouble in high school math, for being a smartass. I wasn't - these are conditions a good software designer accounts for. Hey - I never even mentioned Heiseberg !!!

- busterwasmycatLv 71 month ago
1 in 16. there are 16 possible orders that can arise. that is one of the 16. 2x2x2x2.

- How do you think about the answers? You can sign in to vote the answer.
- MorningfoxLv 71 month ago
There are 16 possible sequences, each with the same probability. So the probability of any particular sequence is 1 / 16.

- Wayne DeguManLv 71 month ago
There are 2 possibilities that can occur at each toss.

so, 2 x 2 x 2 x 2 = 16 ways in total

H, H, H and T is a specific order and one unique combination

i.e. 1/16

:)>