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A puzzle related to mathematical facts and objects, whose solution needs mathematical arguments. General mathematics questions are off-topic but can be asked on Mathematics Stack Exchange.

6 votes
Accepted

Next palindrome date and time

The next palindrome date/time will be This must be the next one, since The previous palindrome date/time was Just for completeness
Matthew Jensen's user avatar
2 votes

One-digit products in a row of numbers, base-N

The problem is not really about products, more about finding an arrangement of digits 1 to N-1 (for base N, since digit N does not exist in base N), that conforms to the criterion that any pair in the …
Matthew Jensen's user avatar
1 vote

10x10 divided into the most number of rectangles of different area

A solution with different sizes of rectangles.
Matthew Jensen's user avatar
14 votes
Accepted

Generating numbers with cubes

I really enjoy puzzles like these. Bonus question: Curiosity:
Matthew Jensen's user avatar
3 votes

Painting a 6x6 with 3 colours

The simple answer: Reasoning
Matthew Jensen's user avatar
4 votes
Accepted

Locations on the Earth that are all separated by the same distance

The answer is Explanation
Matthew Jensen's user avatar
3 votes

Rectangles formed from every tetromino, tromino and domino

Simlar to Dr Xorile, I think there are many solutions. Here are several:
Matthew Jensen's user avatar
3 votes

What is the largest number of cubes that can be cut?

An image representation of Gareth's answer
Matthew Jensen's user avatar