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: eight, five, four, nine, one, seven, …. Spot it now? The answer is 6, because the digits are given in alphabetical order…
https://gizmodo.com/gizmodo-monday-puzzle-spell-out-numbers-1850384441