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 9 of 11.
Vikram reddy said:
8 years ago
No, here 15 is repeated in 3&5 so the answer is 2/5.
Aruna said:
1 decade ago
Hi murugesh what you explained is clear. Thank you.
Jasleen said:
2 years ago
I can't understand this question⁉️
Please help me.
Please help me.
(8)
Sagar Valecha Soni said:
1 decade ago
Ya 9/20 is correct I am agree from this answer.
Uday said:
6 years ago
(3, 6,9,12,15,18,5,10,15,20).
= 10/20,
= 1/2.
= 10/20,
= 1/2.
(1)
Geeta chauhan said:
1 decade ago
I cant understand the ans please explain me.
Aneel said:
1 decade ago
Thank you murugesh for clarifying the doubt.
Nicole said:
9 years ago
I'm confused, on how thy got D as an answer?
Rupali said:
1 decade ago
Hi all.
Can anyone explain how 1/20 come?
Can anyone explain how 1/20 come?
Rutu said:
9 years ago
Why s=20 selected? please give me answer.
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