Question

A coin is tossed three times. What is the probability that it lands on heads exactly one time?

Answer 1

Combinatorics. I see.

Answer 2

1/2*1/2*1/2= 1/8

Answer 3

There are total 8 possibilites.

Answer 4

So there is only 1 slot for a head. 1/8

Answer 5

Another way to say is 1!/8 but they are the same.

Answer 6

The probability is 1 in 8 times.

Answer 7

aren't possibilities HTT, THT and TTH

Answer 8

so isn't it 3/8?

Answer 9

Yes.

Answer 10

yes it is - you could do it using a tree diagram - you'd have 8 branches and 3 of them would have just 1 head in them

Answer 11

Okay thanks

Answer 12

yw