New posts in recreational-mathematics

If yesterday were tomorrow, then today would be Friday.

Puzzle with pirates

Come up with some fun "equation Limericks"

Find the four digit number?

Sailors, monkey and coconuts

Giving a 1-hour talk to highschool math club: any topic suggestion?

Prove the series $\sum_{n=1}^{\infty}\frac{1}{{5^n}^!}$ converges to an irrational number

expected value of a sum of a 10 sided die

Smallest future date which involves no repetition of a digit in the format DD/MM/YYYY [closed]

What is the sum of the reciprocal of all of the factors of a number?

Every natural number in binary can be cut and added so that it is a power of $2$? [duplicate]

Which number base contains the most Palindromic Numbers?

Any other Caltrops?

Evaluation of a slow continued fraction

Determining finitude or infinitude from a simple geometric construction

Combinatorial prime problem

Recreational problems in set theory?

Examples of calculus on "strange" spaces

How to cut fried eggs with mathematical elegance and perfection

Breaking chocolate bars game