Question

Odd match

　　Professor Hanks puts 40 matches on the table and explains a game to his friend Kathy.

　　Each player in turn takes one, three or five matches, The winner is the one who takes the last match. Kathy chooses to go first and takes three matches.

　　Who do you think will win this game, Kathy or the professor?

Answer 1

答案：
解析：

Professor Hanks will win. Because after the second player goes, there will always be an even number (偶數(shù)) of matches left. Therefore, the second player will always win.