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New posts in recreational-mathematics
What is the "fastest" increasing function that's useful in some area of math?
functions
recreational-mathematics
big-numbers
A variant of the Monty Hall problem
probability
recreational-mathematics
puzzle
paradoxes
monty-hall
Function whose third derivative is itself.
ordinary-differential-equations
derivatives
recreational-mathematics
Mathematics for the afterlife
recreational-mathematics
big-list
Is there a nice proof that $123456789098765432111$ is prime?
elementary-number-theory
prime-numbers
recreational-mathematics
Limit associated with a recursion
probability
sequences-and-series
number-theory
recreational-mathematics
recursion
Can we find sums for $\int_1^{\infty }e^{\pi i t} \left(t^{1/t}-1\right) \, dt?$
integration
sequences-and-series
recreational-mathematics
Extending prime numbers digit by digit while retaining primality
elementary-number-theory
prime-numbers
recreational-mathematics
decimal-expansion
How much weight is on each person in a human pyramid?
discrete-mathematics
recurrence-relations
recreational-mathematics
How many triangles
combinatorics
puzzle
recreational-mathematics
The expected outcome of a random game of chess?
probability
recreational-mathematics
combinatorial-game-theory
Could the sum of an even number of distinct positive odd numbers be divisible by each of the odd numbers?
number-theory
arithmetic
recreational-mathematics
problem-solving
Expected number of people to not get shot?
probability
recreational-mathematics
puzzle
average
geometric-probability
"If $1/a + 1/b = 1 /c$ where $a, b, c$ are positive integers with no common factor, $(a + b)$ is the square of an integer"
elementary-number-theory
recreational-mathematics
contest-math
Sharing a pepperoni pizza with your worst enemy
recreational-mathematics
puzzle
combinatorial-game-theory
Multiplicative order of 2 mod p
number-theory
prime-numbers
recreational-mathematics
riemann-zeta
What numbers can be created by $1-x^2$ and $x/2$?
functions
dynamical-systems
recreational-mathematics
function-and-relation-composition
How does the divisibility graphs work?
elementary-number-theory
graph-theory
recreational-mathematics
divisibility
Xmas Maths 2015
integration
summation
physics
recreational-mathematics
What are some math books written in dialogue or story form, e.g., a teacher explaining to a student?
reference-request
soft-question
recreational-mathematics
education
big-list
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