Q. 9 C

Three unbiased coins are tossed once. Find the probability of getting

at most 2 tails

Answer :

We know that,


Probability of occurrence of an event


Let T be tails and H be heads


Total possible outcomes = TTT, TTH, THT, HTT, THH, HTH, HHT, HHH


Desired outcomes are at most two tails. So, desired outputs are THH, HTH, HHT, TTH, THT, HTT, HHH


Total no.of outcomes are 8 and desired outcomes are 7


Therefore, the probability of getting at most 2 tails


Conclusion: Probability of getting at most two tails is


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :