Wrong answet on submitting code

#1

Answer should be 6.25. But its giving WA on submission.

#2

Mention problem link
Mention Problem Name
Mention code link

#3

Question is interview candidates. See the link https://www.codechef.com/wiki/tutorial-expectation

#4

I havent got this resolved. any solution?

#5

Hi Abhineet, what do basic formula of probability says:

P = No. of Favorable outcomes / Total no. of outcomes
P = n1 / n2

as you can see that probability of 1 candidate getting selected is 0.16.
i.e. P = 0.16&
n1 = 1
now he unknown that is left is n2 i.e. total number of outcomes.

Now,
n2 = n1 / P

= 1 / 0.16
= 6.25

now since you cannot take interview of a 1/4th of any person therefore, you need 7 people.
and so the answer is 7.

just cout << 7 without any input or any other processing.

#6

Hi Abhineet, as you are not responding to this thread, I am marking your doubt as Resolved for now. Re-open it if required.

Please mark your doubts as resolved in your course’s “ Ask Doubt ” section, when your doubt is resolved.