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 2 of 3.
Amulya said:
1 decade ago
Please I need help !
Three of six vertices of a rectangle hexagon are chosen at random. The possibility that the triangle with three vertices is equilateral equal to ?
Three of six vertices of a rectangle hexagon are chosen at random. The possibility that the triangle with three vertices is equilateral equal to ?
Aditi said:
1 decade ago
What is the meaning of blank in this question?
Saheeba batra said:
1 decade ago
Hi Amulya is the answer 1/10?
If yes then, first draw a hexagon ABCDEF, you will see that te only equilateral triangles than can be formed are ACE and FBD, order of the points wont matter as it leads to the same triangle.
Now the number of ways in which points can be chosen are 6c3.
So your answer is : 2/6c3.
If yes then, first draw a hexagon ABCDEF, you will see that te only equilateral triangles than can be formed are ACE and FBD, order of the points wont matter as it leads to the same triangle.
Now the number of ways in which points can be chosen are 6c3.
So your answer is : 2/6c3.
Megala said:
1 decade ago
What is the meaning of blanks and how could be the total sample space is 35?
Priya said:
9 years ago
Total will be 35 as 10 prizes + 25 blanks.
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)
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)
Ammu said:
8 years ago
I can't understand this concept. Can anyone explain me to get it?
(2)
Ramu said:
6 years ago
Why we should add blanks and prizes for this? Please tell me.
(1)
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)
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