Bryukh-Checkio-Tasks/checkio-task-good-radix — pull request #2 by Vachenzo (2013-10-08 20:19:32+00:00)
Title: small updates to language

You could mention the hexadecimal system and use that as your example here. It could still make sense. That has a radix of 16 with the digits 0-9 and letters A-F. Up to you though.