Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 9 (Q.No. 36)
36.
Probability of a lO-year flood to occur at least once in the next 4 years is
25%
35%
50%
65%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
6 comments Page 1 of 1.

Priyanka said:   5 years ago
B is correct

Jatin Patel said:   6 years ago
The Correct answer is 35%.

Umesh H A said:   7 years ago
Yes, I agree @Chethan.

Chetan said:   8 years ago
1/T=P 1/10=0.1
1-P=q 1-0.1=0.9
q^n - never occurring.
1-q^n Occurring once.

Hence. 1-0.9^4=34.5% = Ans.

Amrit Raj said:   8 years ago
@Rakesh.

How B?

Rakesh said:   9 years ago
Option B is the right answer. How it's 25%?

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