Question

A coin is tossed three times. Find the probability of getting 2 heads

Answer 1

P(hht) or P(thh) or P(hth)

Answer 2

since the probability of getting h is 1/2 for any toss

the probability of getting any 3 results is .5^3

3 ways to get 2h, so 3*.5^3 seems right to me

Answer 3

uh haha the answer is 3/8 btw

Answer 4

how is that the answer?

Answer 5

yes :)

3*(1/2)^3 = 3/2^3 = 3/8

Answer 6

well, lets table it up that might help to see it happen instead of theory based

Answer 7

list all the possible ways of getting results from 3 tosses

hhh

hht
hth
thh

htt
tht
tth

ttt


so we have 8 possible outcomes, 3 of which have only 2 heads in them

3 out of 8 is 3/8

Answer 8

isn't there 9 possible outcomes?

Answer 9

wait nvm LOL

Answer 10

ok I get it thx

Answer 11

did i miss one or did you miscount?

Answer 12

good luck :)

Answer 13

thanks