CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Three unbiased coins are tossed simultaneously. The probability of getting at least two tails is

A

38
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

13
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

18
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

12
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D
12
When three coins are tossed simultaneously, the possible outcomes are (H,H,H),(H,H,T),(H,T,H),(T,H,H),(H,T,T),(T,H,T),(T,T,H),(T,T,T), which are equally likely.

Total number of outcomes = 8

Let E be an event of getting at least two tails.

The outcomes favourable to event E are (H,T,T),(T,H,T),(T,T,H),(T,T,T).

Number of outcomes favourable to E = 4
P(E)=No of favourable outcomesTotal no of outcomes
48=12
Hence, the correct answer is option (d).

flag
Suggest Corrections
thumbs-up
3
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Introduction to Probability
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon