minus-squarewiccan2@lemmy.worldtoShowerthoughts@lemmy.world•Whoever invented the 12-hour clock never doubted that people will always know if it's day or nightlinkfedilinkarrow-up3·21 days agoThe cool math trick I know of is using your other hand to count groups of 12, 5 fingers times 12 knuckles is 60. linkfedilink
The cool math trick I know of is using your other hand to count groups of 12, 5 fingers times 12 knuckles is 60.