themaninblack@lemmy.world to memes@lemmy.world · 4 months agoMath(s)lemmy.worldexternal-linkmessage-square43fedilinkarrow-up1585arrow-down129
arrow-up1556arrow-down1external-linkMath(s)lemmy.worldthemaninblack@lemmy.world to memes@lemmy.world · 4 months agomessage-square43fedilink
minus-squarePrime_Minister_Keyes@lemm.eelinkfedilinkarrow-up23·4 months agoWell, on the surface, it’s just 60-3, so clearly divisible by 3 itself. Now 221, that’s some fuckery.
minus-squareAlenalda@lemmy.worldlinkfedilinkarrow-up4·4 months agoWhen I was young I learned that when you add up all the numbers if that number is a multiple of 3 than the original number is also divisible by 3. So 51, 5+1=6 and 6 divisible by 3 and so must 51.
minus-squarelennivelkant@discuss.tchncs.delinkfedilinkarrow-up2·4 months agoDammit, it was right in the post, why did that take me so long?
Well, on the surface, it’s just 60-3, so clearly divisible by 3 itself. Now 221, that’s some fuckery.
When I was young I learned that when you add up all the numbers if that number is a multiple of 3 than the original number is also divisible by 3. So 51, 5+1=6 and 6 divisible by 3 and so must 51.
Dammit, it was right in the post, why did that take me so long?