threelonmusketeers to Math [email protected]English • 10 hours agoJohn Conway proves that 91 is the smallest number which looks prime but isn'twww.youtube.comexternal-linkmessage-square16fedilinkarrow-up180arrow-down13
arrow-up177arrow-down1external-linkJohn Conway proves that 91 is the smallest number which looks prime but isn'twww.youtube.comthreelonmusketeers to Math [email protected]English • 10 hours agomessage-square16fedilink
minus-squareTunaCowboylinkEnglish22•9 hours agoNaw, 5 + 1 = 6, 6 is divisible by 3, so 51 is divisible by 3.
minus-square@xpinchxlinkEnglish3•3 hours agoI shared this at work recently and nobody cared. 3 6 and 9 are all kinda special.
minus-square@MojavelinkEnglish-2•8 hours agoSure, and 91 is divisible by 7 if you know your 7 times tables.
Naw, 5 + 1 = 6, 6 is divisible by 3, so 51 is divisible by 3.
I shared this at work recently and nobody cared. 3 6 and 9 are all kinda special.
Sure, and 91 is divisible by 7 if you know your 7 times tables.