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.
Santosh said:
1 decade ago
Here totally we have 10p and 25b (like red and blue balls). So totally we have 35. We need only prizes then 10c1/35c1.
Thameem ansari said:
1 decade ago
Total samples n(s)=25+10=35;
for getting one prize from 10 prizes n(e)=10c1;
probability =n(s)/n(e)=10/35=2/7
for getting one prize from 10 prizes n(e)=10c1;
probability =n(s)/n(e)=10/35=2/7
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)
Megala said:
1 decade ago
What is the meaning of blanks and how could be the total sample space is 35?
Swetha said:
1 decade ago
Probability= n(e)/n(s)
n(e)= 10c1 =10
n(s)= 10+25 =35c1 =35
p=10/35=2/7
n(e)= 10c1 =10
n(s)= 10+25 =35c1 =35
p=10/35=2/7
Nikhil said:
6 years ago
What is the meaning of blank in this question? Please tell about it.
(5)
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)
Shree Hemalatha said:
1 decade ago
I cant understand the concept, could you explain me clearly.
Aditi said:
1 decade ago
What is the meaning of blank in this question?
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