Newbetuts

Does the fraction of distinct substrings in prefixes of the Thue–Morse sequence of length $2^n$ tend to $73/96$?

Determine the number of positive integer x where $x\leq 9,999,999$ and the sum of the digits in x equals 31.

How to color a board such that each square has exactly two neighbors of the opposite color

How to handle "((9^x)-2)%5" without overflow at higher x?

Applications of "finite mathematics" to physics

Euler's theorem: [3]^2014^2014 mod 98

Closed Form for Factorial Sum

Prove that sets $A=(-1,5]$ and $B=(3,11)$ have the same cardinality

The following combinatorial equality is true? If yes, anyone can give me a hint how to prove it?

Composition of Matrix relation

How do I prove this combinatorial identity using inclusion and exclusion principle?

Prove that $n! + k$ is a composite number

Repeated squaring techniques

Chromatic polynomial for a bipartite graph

Average shortest distance between some random points in a box

Number of triangles inside given n-gon?

New posts in discrete-mathematics

A strange bijection without fixed points

Probability that n people collectively occupy all 365 birthdays

Explanation of the recursion for number of surjections

write five digits numbers using $0,0,0,1,1,2,2,2,2,3,3,3,4,4$.

Does the fraction of distinct substrings in prefixes of the Thue–Morse sequence of length $2^n$ tend to $73/96$?

Determine the number of positive integer x where $x\leq 9,999,999$ and the sum of the digits in x equals 31.

How to color a board such that each square has exactly two neighbors of the opposite color

How to handle "((9^x)-2)%5" without overflow at higher x?

Applications of "finite mathematics" to physics

Euler's theorem: [3]^2014^2014 mod 98

Closed Form for Factorial Sum

Prove that sets $A=(-1,5]$ and $B=(3,11)$ have the same cardinality

The following combinatorial equality is true? If yes, anyone can give me a hint how to prove it?

Composition of Matrix relation

How do I prove this combinatorial identity using inclusion and exclusion principle?

Prove that $n! + k$ is a composite number

Repeated squaring techniques

Chromatic polynomial for a bipartite graph

Average shortest distance between some random points in a box

Number of triangles inside given n-gon?