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2d
accepted Expected number of days of watching movie
2d
comment Expected number of days of watching movie
Could you provide an explanation or answer on how to apply linearity of expectation , as I have tried to apply it but no success so far .
2d
comment Expected number of days of watching movie
If I know the probability for x days would not the expectation be x*p(x) ?
2d
comment Expected number of days of watching movie
Ok , I mean is what is the probability all movies have been watched after x days . Is it clear now ?
2d
comment Expected number of days of watching movie
What I mean is the expected number of days I have to choose and watch movies such that all are watched .
2d
comment Expected number of days of watching movie
The probability is independent , that is the probability of choosing any three movies would be $p^3$ .
2d
asked Expected number of days of watching movie
Aug
2
comment How to check if $\text{position}\left(\frac{a + b} 2\right )$ is in range $\text{position}\left(a\right )$ and $\text{position}\left(b\right )$
Simiar to this problem I guess , codeforces.com/contest/452/problem/F . (Note : This is from an already completed contest)
Jul
17
comment $k$-th number in $N \times M$ Table
$n(p)$ can be found in $O(M)$ or $O(N)$ complexity .
Jul
17
awarded  Teacher
Jul
17
answered $k$-th number in $N \times M$ Table
Jul
8
comment Find sum of all permutations
This is a problem from an ongoing contest . Kindly close the question until the contest is over. codechef.com/JULY14/problems/SEAEQ
Jul
6
comment Counting maximum moves
Problem is from ongoing contest codechef.com/JULY14/problems/GNUM . Kindly close the question until the contest is Over.
Jul
6
comment Distributing cards among players
This is a problem from an ongoing contest codechef.com/JULY14/problems/LUCKG . Kindly put this question on hold until the contest is over.
Jul
2
awarded  Curious
Jun
29
awarded  Popular Question
May
12
awarded  Popular Question
May
10
awarded  Good Question
Apr
9
comment Find all subsets whose sum modulo a value is 0.
Please close this question till the contest gets over. This is an ongoing contest problem codechef.com/APRIL14/problems/ANUCBC .
Apr
5
comment Count Integers satisfying the conditions
Please close this question as it is a ongoing contest problem. codechef.com/APRIL14/problems/CNPIIM