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New posts in recreational-mathematics
Fewest required values in magic square?
elementary-number-theory
asymptotics
recreational-mathematics
magic-square
Maximally touching toruses
geometry
recreational-mathematics
Probability of winning a prize in a raffle
probability
combinatorics
binomial-coefficients
recreational-mathematics
problem-solving
Does every number base have at least one "Baseless number"?
number-theory
diophantine-equations
examples-counterexamples
recreational-mathematics
number-systems
Puzzle of renting rooms?
recreational-mathematics
3d
puzzle
Six of a kind .
arithmetic
recreational-mathematics
How many numbers $\le x$ can be factorized into three numbers which form the sides of a triangle?
number-theory
elementary-number-theory
inequality
prime-numbers
recreational-mathematics
Algebraic structures associated to flexagons?
abstract-algebra
group-theory
reference-request
recreational-mathematics
education
Determining the number of ways a number can be written as sum of three squares
number-theory
elementary-number-theory
recreational-mathematics
computational-mathematics
sums-of-squares
Coloring 5 Largest Numbers in Each Row and Column Yields at Least 25 Double-Colored Numbers
combinatorics
recreational-mathematics
puzzle
Guessing a number between $1$ and $100$ with 10 distinct questions and 9 honest answers
recreational-mathematics
puzzle
coding-theory
The Hardest Sudoku Puzzle
optimization
recreational-mathematics
latin-square
sudoku
A curious case of $1729$
number-theory
elementary-number-theory
recreational-mathematics
problem-solving
puzzle
Greatest perimeter polygon on a geoboard
geometry
recreational-mathematics
polygons
Expected number of calls for bingo win
probability
recreational-mathematics
Identities like $4+5+6=7+8$ and $10^2+11^2+12^2=13^2+14^2$ and so on...
elementary-number-theory
arithmetic
recreational-mathematics
puzzle
computational-mathematics
Conway's Game of Life
recreational-mathematics
cellular-automata
An equation of the form A + B + C = ABC [duplicate]
elementary-number-theory
contest-math
diophantine-equations
recreational-mathematics
Arc sums for a circle of $k$ positive integers whose total sum is $n$
combinatorics
recreational-mathematics
problem-solving
pigeonhole-principle
Volume of 1/2 using hull of finite point set with diameter 1
combinatorics
geometry
recreational-mathematics
volume
polyhedra
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