Probability deals with the chances of a particular event happening out of total possible outcomes. When a coin is tossed, there is a chance of getting either a heads or a tails and hence the chances are 50% percentfor each. Coin toss probability calculator helps us find the probability of getting either heads or tails when a coin is tossed the given number of times.
Example 1: A fair coin is tossed 5 times. What is the probability of getting exactly 2 heads?
The total number of possibilities = 25 = 32
(Since there are ‘2’ sides of a coin and it is tossed ‘5’ times)
To get exactly ‘2’ heads, the following are the possibilities:
HHTTT, HTHTT, HTTHT, HTTTH, THHTT, THTHT, THTTH, TTHHT, TTHTH, TTTHH
So when a coin is tossed ‘5’ times, there can be exactly ‘2’ heads ‘10’ times!
Probability, P = (Number of possible outcomes)/ (Total number of outcomes)
P = 10/32
Example 2: A fair coin is tossed 3 times. What is the probability of getting at least 2 heads?
The total number of possibilities = 23 = 8
(Since there are ‘2’ sides of a coin and it is tossed ‘3’ times)
To get at least 2 heads, the following are the possibilities:
HHT, HTH, THH, HHH
So when a coin is tossed ‘3’ times, there can be at least ‘2’ heads ‘4’ times!
Probability, P = (Number of possible outcomes)/ (Total number of outcomes)
P = 4/8 P = 1/2