Aptitude - Probability - Discussion
Discussion Forum : Probability - General Questions (Q.No. 8)
8.
In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?
Answer: Option
Explanation:
| P (getting a prize) = | 10 | = | 10 | = | 2 | . |
| (10 + 25) | 35 | 7 |
Discussion:
25 comments Page 1 of 3.
Mohith Valmiki said:
1 month ago
25+ 10 = 35,
10C1/35C1 = 2/7.
10C1/35C1 = 2/7.
(1)
Abiti said:
3 months ago
Thank you everyone for explaining the answer.
(2)
Purva said:
3 years ago
Using the complement rule:
P(prize) = 1 - P(blanks).
P(prize) = 1 -25/35 = 2/7.
P(prize) = 1 - P(blanks).
P(prize) = 1 -25/35 = 2/7.
(5)
Sahil said:
4 years ago
See my problem is that why we have added prizes and blanks?
Why we are selecting from 35 samples instead of 25 samples?
My answer is 10/25. Correct me If I am wrong.
Why we are selecting from 35 samples instead of 25 samples?
My answer is 10/25. Correct me If I am wrong.
(9)
Nikhil said:
6 years ago
What is the meaning of blank in this question? Please tell about it.
(5)
Sai said:
6 years ago
They are asking about the prize.
So, we taken the prize alone not blanks.
Prize is n(p)= 10.
No of possibilities = 35 which is prize and blanks.
= 10/35 = 3/7.
So, we taken the prize alone not blanks.
Prize is n(p)= 10.
No of possibilities = 35 which is prize and blanks.
= 10/35 = 3/7.
(3)
Ramu said:
6 years ago
Why we should add blanks and prizes for this? Please tell me.
(1)
Ammu said:
8 years ago
I can't understand this concept. Can anyone explain me to get it?
(2)
Ramalakshmi said:
8 years ago
Question is the probability of (getting prize).
Prize given is just 10.
So prob will be 10 divided by total(prize + nothing or blank)..that is out of 10 & 25.
Therefore 10/35 = 2/7.
Prize given is just 10.
So prob will be 10 divided by total(prize + nothing or blank)..that is out of 10 & 25.
Therefore 10/35 = 2/7.
(1)
Prachi said:
9 years ago
Hello,
I want to tell an easy solution for this.
We have 10 prizes and 25 blanks
Total chits = 10 + 25 = 35,
Probability of getting a prize = 10/35,
= 2/7.
This is a very easy way to find out the correct answer.
I want to tell an easy solution for this.
We have 10 prizes and 25 blanks
Total chits = 10 + 25 = 35,
Probability of getting a prize = 10/35,
= 2/7.
This is a very easy way to find out the correct answer.
(11)
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