(two) Look at A & B, which is W1 : If equivalent, then remaining C has the odd ball, even though Otherwise equivalent, then A or B has the odd ball. So Now we have 341 ball in odd established and possess a lot of standard balls in other sets. https://emilioovbcb.loginblogin.com/48154379/the-smart-trick-of-puzzle-ball-that-nobody-is-discussing