564 reputation
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location Kolkata, India
age 24
visits member for 2 years, 7 months
seen 2 hours ago

Hi.i am a student of computer science and engineering department.I am currently completing my bachelor degree from Jadavpur University,kolkata, India.


1d
comment Stars and bars with minimum number of categories
Could you please give a small example, suppose k=n=3 . I am not able to follow your statement actually.
1d
comment Stars and bars with minimum number of categories
i guess you should go till l=k .
1d
revised Finding number of relations using counting
edited body
1d
answered Stars and bars with minimum number of categories
1d
answered Finding number of relations using counting
1d
comment Distinguishable balls in distinguishable boxes?
Yup, please clearly describe. Why 1 < b < N and will each of them have k balls?
1d
comment Number of Dyck paths from $(0,0)$ to $(2n,k_1)$ if allowed to go below the $x$ axis
Did you mean that the possible steps are 1. go right 2. go up 3.go down if $y_1 > k_2$.
1d
awarded  Enthusiast
Dec
16
awarded  Critic
Dec
16
answered Solving ODE for x instead of y
Dec
16
awarded  Caucus
Dec
15
comment Difference between two expressions for combinations with repetition.
There are subtle differences in each of the problem you have referred. They come all under the notion of "distribution" problems. I will suggest you to go through some standard text on combinatorics.
Dec
14
comment Why is my answer to this multichoose counting problem wrong?
yes, exactly. I expanded my answer a little bit. Hope it will be useful.
Dec
14
revised Why is my answer to this multichoose counting problem wrong?
added 427 characters in body
Dec
14
answered Why is my answer to this multichoose counting problem wrong?
Dec
12
comment Counting permutations of a multiset restricted by nearness condition
yah.. i guessed that. :)
Dec
12
answered No. of different possible arrangements.
Dec
12
revised Counting permutations of a multiset restricted by nearness condition
added one parenthesis
Dec
12
comment Counting permutations of a multiset restricted by nearness condition
I guess you got me wrong. For Z=O=6 and N=2, P = $12 \choose 6$ and X = $-3 \choose 6$ = 0 so the answer is P-X = P.
Dec
11
revised Calculate $\sum_{j=0}^k\binom {2k+1}{2j+1}^2=?$
added 49 characters in body