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:
120 comments Page 11 of 12.
Ankush said:
9 years ago
Atleast two tails means?
Ragini said:
12 months ago
The right Answer is 3/8.
(11)
Chinmay Gawane said:
6 months ago
3/8 is the right answer.
(9)
SATHYA said:
1 decade ago
What is unbiased coins?
Sara said:
1 decade ago
Won't it be 3 out of 8?
Siddhi said:
8 years ago
Well explained @Sundar.
Lingesh kumar said:
6 years ago
What is unbaised coins?
(1)
Malarvizhi said:
1 decade ago
How did say n(s) is 8?
Zaid said:
8 years ago
Why we taken event 7?
Manu said:
10 years ago
Thanks very helpful.
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