347 reputation
18
bio website
location Kolkata, India
age 19
visits member for 1 year, 8 months
seen Feb 22 '13 at 19:27

Thank you for all your time in helping me out


Nov
26
awarded  Popular Question
Aug
13
awarded  Yearling
Sep
8
accepted Evaluate the following limit: $\lim_{n\to\infty}\left(\sum_{r=1}^{n}{\frac{r}{n^{2}+n+r}}\right)$
Sep
8
accepted Perimeter of an ellipse
Sep
8
answered Evaluate the following limit: $\lim_{n\to\infty}\left(\sum_{r=1}^{n}{\frac{r}{n^{2}+n+r}}\right)$
Sep
8
asked Evaluate the following limit: $\lim_{n\to\infty}\left(\sum_{r=1}^{n}{\frac{r}{n^{2}+n+r}}\right)$
Sep
8
awarded  Critic
Sep
5
revised What about without replacement
added 1 characters in body
Sep
5
comment What about without replacement
What about the probability of picking out the spade from the remaining 49 cards?
Sep
5
comment What about without replacement
But here I can get a spade in the first draw as well. This is the probability there is a spade in at least one of the four draws
Sep
5
answered What about without replacement
Sep
5
answered Perimeter of an ellipse
Sep
5
accepted How do I integrate this expression: $\int{2x\,dx\over x^3+x^{2/3}}$?
Sep
5
accepted Prove that square root of 2 is irrational using the principle of Mathematical Induction
Sep
5
accepted Find the fallacy in the following treatment
Sep
5
asked Perimeter of an ellipse
Sep
4
accepted Method of Least Squares-Why is it preferred?
Sep
3
comment Is $x^y$ - $a^b$ divisible by $z$, where $y$ is large?
No i meant to convert say 4^3 as (63-1). say you have 4^9 you can break this as (63-1)^3 and then expand binomially if you want to check divisibilty, say by 7.
Sep
3
answered What is the use of moments in statistics
Sep
3
answered Is $x^y$ - $a^b$ divisible by $z$, where $y$ is large?