Aptitude - Probability - Discussion

Discussion Forum : Probability - General Questions (Q.No. 5)
5.
Three unbiased coins are tossed. What is the probability of getting at most two heads?
3
4
1
4
3
8
7
8
Answer: Option
Explanation:

Here S = {TTT, TTH, THT, HTT, THH, HTH, HHT, HHH}

Let E = event of getting at most two heads.

Then E = {TTT, TTH, THT, HTT, THH, HTH, HHT}.

P(E) = n(E) = 7 .
n(S) 8

Discussion:
119 comments Page 12 of 12.

Deva said:   7 years ago
Thank You @SUNDAR.

Sathish said:   1 decade ago
Thank you sundar.

Dhamodar said:   8 years ago
Why include TTT?

Shubham said:   7 years ago
Thanks @Harini.

Soaib said:   7 years ago
Thanks @Harini.

Sumanth said:   4 years ago
It is 6/8=3/4.
(4)

Rishal said:   9 years ago
What is n(s)?

Eraiarul said:   6 years ago
Thanks all.

Kharkhanhimel said:   5 years ago
Thanks all.


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