You and I are playing a number game. We’ll say numbers out loud in turns. The first player can only call a number between one and ten, say, X. Then the second player will have to call the number, which is at least X+1 or X+10 at the most. Then the players switch turns. The winner is the person who is the first to say “fifty.” If you want to win, should you go first or second and what number should you start with? Please EXPLAIN!