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?
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:
121 comments Page 6 of 13.
Zahid said:
4 years ago
How to find the events of coins quickly like TTT and HHT etc? explain me.
(5)
Sunny said:
7 years ago
At most two head means there can be 0, 1 or 2 heads not more than 2.
Sarma said:
10 years ago
3/4 is the answer.
Why are you considering TTT as a possible case?
Why are you considering TTT as a possible case?
Murugesh said:
1 decade ago
@dharini...
2---> H & T
3---> total no of coins.
so 2^3.
2---> H & T
3---> total no of coins.
so 2^3.
Jyoti said:
1 decade ago
Is there any short way to get (s) ?. This way takes much time.
Reddaiah said:
1 decade ago
Can you explain why were taken 7/8 as output why were taken 7?
Arun Kumar said:
7 years ago
@All.
Note : At most means upto two heads not more than it.
Note : At most means upto two heads not more than it.
Triveni said:
3 years ago
I can't Understand this. Anyone, please help me to get this.
(1)
XYZ said:
9 years ago
Can anyone tell me the combination of three unbiased coins?
MUKESH MAHLI said:
4 years ago
At most mean- less than or less than equal to.
Am I right?
Am I right?
(4)
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