ickplant@lemmy.world to Lemmy Shitpost@lemmy.world · 1 year agoPaniki.postimg.ccimagemessage-square147fedilinkarrow-up11.25Karrow-down145
arrow-up11.21Karrow-down1imagePaniki.postimg.ccickplant@lemmy.world to Lemmy Shitpost@lemmy.world · 1 year agomessage-square147fedilink
minus-squareoctoperson@sh.itjust.workslinkfedilinkarrow-up3·1 year ago11 is alternating sum So, first digit minus second plus third minus fourth… And then check if that is divisible by 11.
11 is alternating sum
So, first digit minus second plus third minus fourth…
And then check if that is divisible by 11.