Newbetuts
.
New posts in recreational-mathematics
Selecting a menu
combinatorics
recreational-mathematics
puzzle
To find the minimum number of $3$-toppings pizza so that it meets the demand of my friend!
combinatorics
discrete-mathematics
recreational-mathematics
pigeonhole-principle
combinatorial-designs
A random sphere containing the center of the unit cube
probability
contest-math
recreational-mathematics
geometric-probability
The 'Unlock All Digits' Game
combinatorics
recreational-mathematics
Tricky 3d geometry problem
geometry
recreational-mathematics
analytic-geometry
3d
Is there an exact solution for $\large\int \frac{dx}{\tan^{-1}(x)}$?
integration
summation
recreational-mathematics
inverse
trigonometric-integrals
Maximum run in binary digit expansions
combinatorics
number-theory
discrete-mathematics
recreational-mathematics
binary
How to choose between an odd number of options with a fair coin
probability
recreational-mathematics
A Drunken Prison Guard. [duplicate]
number-theory
recreational-mathematics
Integer sequences which quickly become unimaginably large, then shrink down to "normal" size again?
combinatorics
sequences-and-series
graph-theory
recreational-mathematics
Why does this pattern occur: $123456789 \times 8 + 9 = 987654321$
elementary-number-theory
arithmetic
recreational-mathematics
decimal-expansion
Are there an infinite set of sets that only have one element in common with each other?
elementary-set-theory
recreational-mathematics
Smallest multiple whose digits are only ones and zeros [duplicate]
elementary-number-theory
recreational-mathematics
problem-solving
How can we draw $14$ squares to obtain an $8 \times 8$ table divided into $64$ unit squares?
discrete-mathematics
optimization
algorithms
recreational-mathematics
Series Representation of the Glasser function: $\text G(x)\mathop=\limits^\text{def} \int_0^x \sin(t\sin(t))dt\sim2\sqrt{\frac x\pi}$
sequences-and-series
recreational-mathematics
special-functions
trigonometric-integrals
chebyshev-polynomials
Simplify : $( \sqrt 5 + \sqrt6 + \sqrt7)(− \sqrt5 + \sqrt6 + \sqrt7)(\sqrt5 − \sqrt6 + \sqrt7)(\sqrt5 + \sqrt6 − \sqrt7) $
arithmetic
recreational-mathematics
contest-math
Is the sum of digits of $\left(16^k - 1\right)$ less than $6k$ for $k > 223$?
sequences-and-series
number-theory
recreational-mathematics
Minimum and maximum determinant of a sudoku-matrix
matrices
eigenvalues-eigenvectors
determinant
recreational-mathematics
sudoku
Deriving a formula for the amount of time you should study for multiple tests
calculus
ordinary-differential-equations
derivatives
partial-differential-equations
recreational-mathematics
Do any of these sequences have infinitely-many distinct iterates under run-length substitution?
sequences-and-series
discrete-mathematics
dynamical-systems
recreational-mathematics
Prev
Next