16. Playing Cards Number System
What if we counted using playing cards?

Consider the standard deck of playing cards with A, 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K in each of four suits. If we let a joker be zero and treat the ace as one we have a 14 "digit" number system. Create a 14 by 14 grid for adding numbers in this system and write down the sums along the main diagonal. That is, what is joker+joker in this system? How about 4+4? 8+8? Etc. Fill in the entire diagonal of the table.

11 Jul 2018 01:47