Nowadays, it seems that we cannot do anything without passwords. Experts constantly warn us to be careful about using passwords that can be easily figured out by bad actors, advising us to create long ...

The New York Times has another excellent little puzzle game to add to your daily Wordle. This one, however, taps into your math skills rather than your vocabulary. Still, I find the two rather ...

Assign the digits 0 through 9 to the letters below to create valid sums. Each letter stands for a unique digit, and all occurrences of that letter stand for the same digit. (For instance, if A = 6, ...

Here’s a famous teaser that I don’t really like much: What number comes next in the sequence 8, 5, 4, 9, 1, 7,…? It’s not so obvious. It becomes a little easier when we write the sequence in words: ...

Randomly scramble the digits 0, 1, 2, 3, 4, 5 and 6 to form a seven-digit number (or a six-digit number if the leading digit is 0). Rank the following events in order ...