Talk:1935: 2018

Explain xkcd: It's 'cause you're dumb.
Revision as of 17:37, 29 December 2017 by 172.69.33.35 (talk)
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This is easy! Don't factor it - just multiply by 25 and if that ends in two zeros, but not four zeros then it's a leap year, at least most of the time.....17:25, 29 December 2017 (UTC)

This is easy! Don’t factor it - just convert it into a binary and look at the 2 least significant bits. If they are 00 the number is multiple of four. —172.69.33.35 17:37, 29 December 2017 (UTC)