Comment on Panik
octoperson@sh.itjust.works 1 year ago11 is alternating sum
So, first digit minus second plus third minus fourth…
And then check if that is divisible by 11.
Comment on Panik
octoperson@sh.itjust.works 1 year ago11 is alternating sum
So, first digit minus second plus third minus fourth…
And then check if that is divisible by 11.