Sponsor Area
Straight Lines
Question
Three coins are tossed once. Find the probability of getting exactly two tails.
Solution
Three coins are tossed.
Sample space, S = {HHH, HHT, HTH, THH, TTH, THT, HTT, TTT}
n(S) = 8
Event A: Exactly two tails are obtained.
A = {TTH, THT, HTT} 
n(A) = 3
Hence, 
Some More Questions From Straight Lines Chapter
Describe the sample space for the following experiment.
A coin is tossed four times.
A coin is tossed four times.
Describe the sample space for the following experiment.
A coin is tossed once.
A coin is tossed once.
Describe the sample space for the following experiment.
A coin is tossed twice.
A coin is tossed twice.
Describe the sample space S, when a die is tossed once .
An experiment consists of recording boy-girl composition of families with 2 children. What is the sample space if we are interested in knowing whether it is a boy or girl in the order of their births?
Sponsor Area
Mock Test Series
Mock Test Series