All substitution ciphers can be cracked by using the following tips: Scan through the cipher, looking for single-letter words. Count how many times each s...

Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. It only takes a minute to sign up. Is it worth it to...

The integers are the set of whole numbers and their opposites. Fractions and decimals are not included in the set of integers. For example, 2,5,0,−12,244,...

For each n, the number of Latin squares altogether (sequence A002860 in the OEIS) is n! (n − 1)! times the number of reduced Latin squares (sequence A0003...

Then your lookup becomes the following algorithm: Use the correct dictionary map based on the length of the word. Compute the length of your word’s vector...

A two-headed coin is worth very little, usually between $3 to $10, depending on how well the crafter made the coin and the face value of the coin. These c...

The 9 Hardest Things Programmers Have to Do Naming things. Explaining what I do (or don’t do. Estimating time to complete tasks. Dealing with other people...

Pinocchio eats sugar, but refuses to take medicine. When the undertakers come for him, he drinks the medicine and feels better. Afterwards he tells a lie ...

Bartenders would keep a watch on the alcohol consumption of the patrons, keeping an eye on the pints and quarts that were consumed. As a reminder to the p...

Run your tongue over all the surfaces of your teeth. If your teeth feel as smooth as glass, you’ve done a good job of brushing. If some areas still feel a...