Three unbiased coins are tossed.what is the probability of getting-
- two heads?
- at least two heads?
- at most two heads?
Dear Student!
Here is the answer to your question.
The sample space obtained while three unbiased coins are tossed is given by {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}, where H means the head appears and T means the tail appears.
Thus, a total of 8 outcomes is obtained when three unbiased coins are tossed.
The outcomes of the event, getting exactly two heads are HHT, HTH and THH.
There are 3 outcomes of the event getting exactly two heads by tossing three unbiased coins.
Cheers!