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:
106 comments Page 11 of 11.
Mani said:
8 years ago
Where this 6 gone in the event?
Anonymous said:
8 years ago
The correct answer is 9/20.
Kiruba said:
1 decade ago
Thanks sneha. Ans is 9/20.
Thrideep said:
7 years ago
I think The answer is 3/4.
Siva said:
6 years ago
How come 4/20 & 6/20?
Albert said:
1 decade ago
Final answer is 9/20
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers