Yeah you got it wrong, it’s 1 - 42 = -7 2 - 12 = 0 2 - 8*2 = -14
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AccountMaker@slrpnk.net 8 months agoBut what about 14, 21 and 28?
14 - 4*2 = 6, not divisible by 7
21 - 1*2 = 19, not divisible by 7
28 - 8*2 = 12, not divisible by 7
Or did I misunderstand the algorithm?
Kwdg@discuss.tchncs.de 8 months ago
Colalextrast@lemmynsfw.com 8 months ago
It goes like this
create 2 distinct numbers by isolating the last digit from the other. For example, 154 becomes 15 and 4.
double the number derived from the last digit. So, the four becomes 8.
3)subtract from the number derived from the preceeding digits. 15 - 8.
AccountMaker@slrpnk.net 8 months ago
Oooh, I didn’t realize that you subtract from the original number without the last digit. Thanks