Question

A fair coin is tossed 3 times in a row. What is the probability that heads appears on only the last toss?
1/8

3/8

3/16

3/4

Answer 1

Dear EddyAlmighty:
Might be a good idea to check that you've copied the problem down correctly. Why? Because no probability can be outside the range 0 to 1.
I see you've corrected that already.
Note that with a fair coin, the probability of getting a Head is the same as of getting a Tail: always 0.5 or 1/2.

Answer 2

If you throw a coin once and note whehter you get a Head or a Tail, the next and the third such event will be INDEPENDENT of the previous event.

Thus, all you have to do to answer this question is to multiply the probabilities: (1/2)(1/2)(1/2). Give it a try, please.

Answer 3

i got 0.125

Answer 4

...which is the same as 1/8. Congratulations.

Answer 5

Are you Almighty?

Answer 6

:D thank you so much mathmale ! im trying to be almighty lol

Answer 7

Good luck to you. I've been working for 70 years to become almighty and haven't gotten there yet. :)

Answer 8

70 years of work sounds to me like you already achieved to be Almighty. thank you sir.

Answer 9

My pleasure. See you again soon, I hope!