8, 5, 4, 9, 1, 7, 6, 3, 2, 0: what is the ordering?

Question

The ten digits are written in this order:

8, 5, 4, 9, 1, 7, 6, 3, 2, 0

What is the rule? Then say where the number 10 would go if it were included, and in what order the numbers one to ten would appear.

Accepted Answer

They are in alphabetical order of their English names: eight, five, four, nine, one, seven, six, three, two, zero. Including ten. "Ten" sorts after "six" and before "three": eight, five, four, nine, one, seven, six, ten, three, two, zero. For one to ten only: eight, five, four, nine, one, seven, six, ten, three, two. Why it matters. This ordering actually occurs in practice: a spreadsheet or file system that sorts numbers written as words, or filenames like "eight.txt" and "five.txt", produces exactly this list, and a data pipeline that accidentally sorts numbers as text puts 10 before 2. Rec…

8, 5, 4, 9, 1, 7, 6, 3, 2, 0: what is the ordering?

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