Word sequence puzzles constitute fascinating (and fun) experiments in associative thinking—that is, experiments in how we make semantic, conceptual, or formal connections among the words in a set.

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 numbers listed above are not in base 10, also known as the decimal system. Show puzzle solution The terms of the sequence all represent the decimal (base 10 ...

A number sequence has gone viral on the internet this week, reading: 2, 6, 12, 20, 30, ?. At first glance, it looks easy, but once people start solving it, they realize spotting the pattern is not so ...

This maths puzzle is easier than it looks – you just need to look out for one small detail. Maths is an important part of our ...