Question

wrote down the numbers one through 19 out of numerical order:

8, 18, 11, 15, 5, 4, 14, 9, 19, 1, 7, 17, 6, 16, ?, ?, ?, ?, ?​

Answer 1

Step-by-step explanation:

I’ve written the numbers down alphabetically as they are spelled.

That is eight, eighteen, eleven, fifteen, five, four, fourteen, nine, and so on. This is a trick used in a lot of famous number puzzles — present a seemingly meaningless pattern of numbers, but when you treat the numbers as words the pattern becomes obvious.

To complete the list think of 2, 3, 10, 12, 13 as two, three, ten, twelve and thirteen which would be written alphabetically as ten, thirteen, three, twelve, two. So the remaining numbers should be written in that order; 10, 13, 3, 12, 2.