Question

What is the probability of getting two heads and one tail when a coin is flipped three times?
A. 1/3
B. 3/8
C. 1/2

Answer 1

What do you think?

Answer 2

I'm not sure how to get there.

Answer 3

Well a coin has two sides, heads and tails. So there's a 50% chance, or 1/2 probability, that it will be on or the other.

On each toss it's going to be 1/2 chance to get either option.

Answer 4

But I don't think the answer is 1/2 because the coin is flipped three times so the sample space would be different.

Answer 5

Yes good thinking. It's not just one coin but three coins, each with two outcomes, so 2 times 2 times 2, which is 8. There's 8 possible outcomes. From here, we can plot out the outcomes.

1. HHH
2. HHT
3. HTH
4. THH
5. TTH
6. THT
7. HTT
8. TTT

Where H = heads and T = tails

Answer 6

So the answer would be 3/8

Answer 7

Because in the sample space there are three that have 2 heads and one tail.

Answer 8

Yes

Answer 9

Thank you!

Answer 10

How do i close this post?

Answer 11

Should be right next to 'This question is open,' and 'Bump.'

Answer 12

Oh thank you, and thanks for the help!

Answer 13

You're welcome. Cheers dude