176 reputation
6
bio website
location Noida, India
age
visits member for 3 years, 3 months
seen Sep 28 at 13:25

Graduated from Indian Instituted of Information Technology, Allahabad


Sep
24
awarded  Autobiographer
Oct
17
comment Casio fx 991ms Factorial
I've casio fx-991ES and it has a button for factorial. If your calculator supports factorial computation it must have a key for that :)
Oct
13
comment Number of ways to write 5 digit number with restriction?
thanks, got it. I don't know why I treated this as a tough problem :(
Oct
13
accepted Number of ways to write 5 digit number with restriction?
Oct
13
awarded  Commentator
Oct
13
comment Number of ways to write 5 digit number with restriction?
we can't use 0 at first place as it will make a 4 digit number. 0 can be used anywhere else.
Oct
13
asked Number of ways to write 5 digit number with restriction?
Oct
6
comment Finding eigenvalues of matrix of matrix.
yes, you were right. I was thinking this as a matrix of matrix and so couldn't figure out hint. thanks :)
Oct
6
accepted Finding eigenvalues of matrix of matrix.
Oct
6
comment Finding eigenvalues of matrix of matrix.
Can I ask for a little more hint?
Oct
5
asked Finding eigenvalues of matrix of matrix.
Aug
1
accepted Number of paths in regular graphs, where starting and ending nodes are same
Aug
1
comment Number of paths in regular graphs, where starting and ending nodes are same
I'm little bit weak at graphs so would you please explain what does it stands for taking nth power of adjacency matrix and then looking at diagonal element.
Aug
1
asked Number of paths in regular graphs, where starting and ending nodes are same
Mar
16
comment Proving $\sum_{k=1}^n k\cdot k! = (n+1)!-1$ without using mathematical Induction.
@MattN.: thanks for the valuable information.
Mar
16
comment Proving $\sum_{k=1}^n k\cdot k! = (n+1)!-1$ without using mathematical Induction.
@All: Does closing the question means that there couldn't be proofs without induction and hence there should be no new answers so the question isn't open for discussion anymore?
Mar
15
comment Proving $\sum_{k=1}^n k\cdot k! = (n+1)!-1$ without using mathematical Induction.
@BillDubuque: Actually sometimes ago, on stackoverflow.com some people told me that not accepting the answers would decrease my acceptance percentage and people don't pay much attention towards those who have low acceptance rate. From then onwards, I always select one of the answers as accepted one.
Mar
15
asked Proving $\sum_{k=1}^n k\cdot k! = (n+1)!-1$ without using mathematical Induction.
Mar
14
answered Help Needed To Prove A Trigonometric Identity
Mar
14
awarded  Supporter