Suppose you flip a coin three times.

What is the probability of getting exactly one heads?

The event space contains eight event points. They are: {H,H,H}, {H,H,T}, {H,T,H}, {T,H,H}, {T,T,H}, {T,H,T}, {H,T,T} and {T,T,T}.
So, the total number of outcomes is 8 and the number of favourable cases in which we are getting exactly one heads is 3.
From the Classical definition of Probability, the probability of getting exactly one heads in flipping a coin three times is: 3/8.

Posted by Ravi Raja on 2003-05-20 04:16:44