Probability 5 Question 1
1. For an initial screening of an admission test, a candidate is given fifty problems to solve. If the probability that the candidate can solve any problem is , then the probability that he is unable to solve less than two problem is
(2019 Main, 12 April II)
(a)
(b)
(c)
(d)
Show Answer
Answer:
Correct Answer: 1. (c)
Solution:
- Given that, there are 50 problems to solve in an admission test and probability that the candidate can solve any problem is
(say). So, probability that the candidate cannot solve a problem is .
Now, let
Now, according to binomial probability distribution concept