If you toss three coins 100,000 times, how many times do you expect to see exactly one head come up?

12,500

37,500

3,750

50,000

Question

If you toss three coins 100,000 times, how many times do you expect to see exactly one head come up?

      
12,500

      
37,500

      
3,750

      
50,000

inkyvoyd · Answer

hint: probability of one head is 3/8

anonymous · Answer

I don't know how to do that :/ probability isn't one of my strongest areas.

experimentx · Answer

when head comes, there is always one head.

anonymous · Answer

Huh?

experimentx · Answer

since you are tossing coin 100000 times, you can't expect exact result.

anonymous · Answer

So then it'd be false?

anonymous · Answer

woops.. wrong question lol

experimentx · Answer

not really, 
around would be an answer

experimentx · Answer

first of all, what is the chance that you would see heard if you toss a coin 1 time??

anonymous · Answer

1 out of 2?

experimentx · Answer

then for 2 times??

anonymous · Answer

2 / 4?

experimentx · Answer

yeah ... for 10 times??

anonymous · Answer

10/20?

inkyvoyd · Answer

@experimentX , they mean 3C1 (or 3C2), careful there.

anonymous · Answer

|dw:1335371701616:dw|
the probably you expect to see exactly one head come up is 3/8
then you expect to see exactly one head come up is (3/8)*100,000|dw:1335372310280:dw|

experimentx · Answer

?? @inkyvoyd i am not getting

inkyvoyd · Answer

toss three coins
how many times do you expect to see exactly one head come up?

experimentx · Answer

my bad ... i did't read the question well. sorry, i apologize.

inkyvoyd · Answer

No problem, continue explaining the basics :D

inkyvoyd · Answer

(I apologized for him LOL)

anonymous · Answer

|dw:1335372503581:dw|
the probably you expect to see exactly one head come up is 3/8
then you expect to see exactly one head come up is (3/8)*100,000