New posts in Recreational Mathematics

Corner Swappings on Rubiks Cube

Colouring 10 dots to form equilateral triangles

Antisymmetric Table Puzzle where the Rows/Columns Sum to Zero

Recreational math: If $f(f(x))=e^x$, bound the integral $\int_0^1 f(x)dx$

What numbers can be created by repetitive division of subsequent natural numbers?

Do it without the formula of the surface area of a triangle.

When you inscribe a triangle in a circle in a triangle in a circle in a triangle ...

Probability puzzle about arrival time

How to find a volume of this figure (which is $3080 \text{ cm}^3$) in a few seconds?

How to solve the pair of equations $4a-11b+12c=22$ and $a+5b-4c=17$ over the integers?