Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • The probability that a fair coin will turn up heads three times in a row is given by <img alt="(1 / 2)^{\wedge} 3" src="https://entrancecorner.oncodecogs.com/gif.latex?%281%20/%202%29%5E%7B%5Cwedge

The probability that a fair coin will turn up heads three times in a row is given by (1 / 2)^{\wedge} 3 . What is the probability that it will turn up heads at least once in three tosses?

Option: 1

4 / 8


Option: 2

5 / 8


Option: 3

6 / 8


Option: 4

7 / 8


Answers (1)

best_answer

The probability that a fair coin will turn up heads three times in a row is given by (1 / 2) \wedge 3=1 / 8  The probability that it will turn up heads at least once in three tosses is equal to 1 minus the probability that it will turn up tails all three times. The probability that it will turn up tails all three times is (1 / 2) \wedge 3=1 / 8 , so the probability that it will turn up heads at least once is:
1-(1 / 8)=7 / 8
Therefore, the probability that a fair coin will turn up heads at least once in three tosses is 7 / 8

Posted by

Ajit Kumar Dubey

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

73 or 99 percentile? JEE Main result questioned, J-K candidate says, ‘Don’t create hype’
anam-khan

JEE Main 2025: 11 from Kota coaching centres among 24 students with 100 percentile
anam-khan

Low JEE Main rank? Explore alternative paths for engineering admission

Latest Question