Originally Posted by Wear The Fox Hat
I notice our friend has gone quiet - I wonder is he digging up his abacus to work out how I get over 250 and he gets 100!
I don't know that he'd have an abacus. It needs the understanding of the concept of a zero to use, something that did not come to Europe until after the Romans left. I am afraid our friend doesn't understand arabic numerals in general, let alone a zero, so bringing in his whole mathematical understanding into question........