Aptitude - Probability - Discussion
Discussion Forum : Probability - General Questions (Q.No. 1)
1.
Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?
Answer: Option
Explanation:
Here, S = {1, 2, 3, 4, ...., 19, 20}.
Let E = event of getting a multiple of 3 or 5 = {3, 6 , 9, 12, 15, 18, 5, 10, 20}.
 P(E) = |
n(E) | = | 9 | . |
| n(S) | 20 |
Discussion:
107 comments Page 10 of 11.
Deva Bala said:
9 years ago
The option d) 9/20 is the correct answer.
Kousalya said:
6 years ago
Yes, I too agree 1/2 is the right answer.
Sharada said:
1 decade ago
15 also should come in the list right?
Mahesh said:
9 years ago
What's, and what is e please explain?
Dharmesh Patel said:
1 decade ago
Yes answer is Only and only 9/20.
Pinki said:
1 decade ago
How we calculate n(E) and n(S). ?
Niha said:
1 decade ago
Yes, 9/20 is the correct answer.
Samuel said:
10 years ago
@Divya.
Factorize or divide it.
Factorize or divide it.
Ptavr said:
7 months ago
Nice solution, Thanks, everyone.
(5)
Shakthi said:
1 decade ago
Where this 5 gone in the event?
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