hkju

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14 Questions

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9	Find the number of arrangements of $k \mbox{ }1'$s, $k \mbox{ }2'$s, $\cdots, k \mbox{ }n'$s - total $kn$ cards.
6	Provide different proofs for the following equality.
4	Find the expected value of a dice sum
2	A sum involving powers of binomial coefficients.
2	asymtotic ratio of nonsquarefree repunits

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10 Answers

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3	Question about sum
2	Find the power series expansion of $f(z)=z^2$ around $z = 2$
1	why is $\sum\limits_{k=1}^{n} k^m$ a polynomial with degree $m+1$ in $n$
1	Prove that $n! = \sum_{i=0}^{n-1}{n \choose i}(n-i)^n (-1)^i$
1	Alternative way of finding a limit

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24 Tags

4 sequences-and-series × 5	1 binomial-coefficients × 2
3 homework × 2	1 limit × 2
2 combinatorics × 7	1 polynomials
2 complex-analysis × 2	0 generating-functions × 3
1 calculus × 2	0 irrational-numbers

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$Mathematics Stack Exchange$	Mathematics	359 rep	29
	Programmers	101 rep

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