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1d
comment What is the function “mod”
have you tried to write mod math in google?
1d
comment different k-ary necklaces of length n formula
One person already asked the same question to cheat in online programming competition: math.stackexchange.com/q/1348625/50804. This is ongoing programming contest, ending in one day: hackerrank.com/contests/infinitum12/challenges/…
1d
comment number of distinct necklaces made with n beads and m colors
@JyrkiLahtonen hackerrank.com/contests/infinitum12/challenges/…
1d
comment number of distinct necklaces made with n beads and m colors
This is an ongoing programming contest. So please do not post hints/answers in 2 days.
Jun
29
accepted Convert a tree to a forest where every component has an even number of vertices.
Jun
22
awarded  Popular Question
Jun
16
comment How do authors make their problems/exercises for their math books?
Is this a correct place for such questions?
Jun
16
comment What's the smallest number with first digit 1 that triples when this digit is moved to the end?
How about writing a normal title? Whom will this randomness help?
Jun
12
asked Interesting approximation of distribution of numbers in a Farey sequence
Jun
12
comment How can I approximate a decimal with two fractions where denominator is less or equal to $d$
@AndréNicolas Yes, I have nothing against it, the problem is that $1/4 = 0.25$ and I am looking for such fractions that $\frac{a_1}{b_1} < X < \frac{a_2}{b_2}$. Basically any denominator less or equal to some predefined one.
Jun
12
comment How can I approximate a decimal with two fractions where denominator is less or equal to $d$
@Travis sorry, I updated my original question. I am looking for the best possible approximation. Out of all fractions with denominator less or equal to $d$ I want to find the best.
Jun
12
comment How can I approximate a decimal with two fractions where denominator is less or equal to $d$
@ThomasAndrews I updated my question with the reason why I gave up idea of continued fractions.
Jun
12
revised How can I approximate a decimal with two fractions where denominator is less or equal to $d$
added 371 characters in body; edited tags
Jun
12
comment How can I approximate a decimal with two fractions where denominator is less or equal to $d$
I am not looking for a very rough approximation. Because I can otherwise I can just approximate it with $0/d$ < X < $(d*x+1)/d$.
Jun
12
revised How can I approximate a decimal with two fractions where denominator is less or equal to $d$
added 41 characters in body
Jun
12
asked How can I approximate a decimal with two fractions where denominator is less or equal to $d$
May
21
comment three grasshoppers jumping on a plane.
what does $g_2 - g_1$ stands for? Is this an attempt to write coordinates of grasshopper1 jumped over grasshopper2?
May
21
asked three grasshoppers jumping on a plane.
May
19
comment Random walk on natural number
thank you. I actually was looking for a good introduction to generating functions, so I hope that your suggestion will help me.
May
19
awarded  Benefactor