Question

find the probability of obtaining exactly three heads when flipping three coins.express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth

Answer 1

The probablity of getting one head on tossing one coin = 1/2

Sample space on tossing three coins are;

HHH TTT

HHT TTH

HTH THT

THH HTT

Total number of sample space = 8

Favorable outcome is getting head three

Number of situation when we get three head = 1

Probaility = 1/8

1/8 = 0.125

Probability of obtaining exactly three heads when flipping three coins is 0.125