This holiday-themed brainteaser looks simple, but it's quietly tripping up adults everywhere. A math teacher walks us through solving it.

Holidays bring celebration, rest and, for many families, long stretches of indoor time. For some, this means tabletop games ...

Here, count with me: 1, 2, 3, 4, 5, 6, 7, 8, 9, T, 11, 12 … Oh, what’s that? You write ten with “zero”? Fair enough. Zero, we have been told, is the ...

A math puzzle is a type of brain teaser that tests the reader's critical thinking and problem-solving skills by challenging them to solve a problem. These challenges have the potential to boost ...

Golden Rectangle ruthlessly mined just to form a cone. The post Math Puzzle for December 19, 2025 appeared first on Alameda Post.

Brain teaser puzzles test the reader's critical thinking and problem-solving skills by challenging them to solve a problem. These challenges have the potential to boost intelligence and improve ...

The rules of Sudoku dictate that every row, column and 3×3 bolded box in the completed grid must contain the digits 1 through 9 exactly once. A surprising fact emerges from these simple rules. In ...

The following is adapted from the introduction to “The Riddler: Fantastic Puzzles from FiveThirtyEight,” published by W. W. Norton & Co. It is in stores today! The world’s oldest collection of math ...