Why is my answer to the following question wrong. The question: Six boxes are numbered 1 through 6. How many ways are there to put 20 identical balls into these boxes so that none of them is empty? My solution: Since each box has to have at least 1 ball, put 1 ball in each of the 6 boxes. Now,...

For escalating a complaint with United Airlines, call 𝟠𝟘𝟜-𝟠𝟝𝟛-𝟡𝟘𝟘𝟙 and ask to speak with a supervisor. If necessary, escalate the issue through their website contact form or social media platforms.

This is a cryptic crossword with a strange twist. The wordplay part works like normal wordplay, and clues the word to be entered into the grid. However, the "definition" part here is made to resemble the wordplay for a single letter (capitalization matters!) or some other symbol. For example, the...

Make the number 987 using digits 1, 3, 5, 7, 9. Rules: Use all five digits exactly once. Allowed operations: $+,−,\times,\div,!$ (factorial), $x^y$ (exponentiation),$\sqrt{x}$ (square root). Parentheses are allowed. (e.g. $(3 + 5) * 7$). Everything that is not explicitly allowed is disallowed.

Towards the end of a cold February many years ago (some time in the 2010s) I was sharing a takeaway with a friend who suddenly, mid-conversation, asked me "What year is it now?" At first I was bemused, but after a few seconds I twigged what they were getting at. As it happened, I had recently cre...