A long time ago, there was a king in【小题1】. One day, a wise old man came to the palace and the king【小题2】 him to a game. The king 【小题3】 the old man, “You can have any 【小题4】 if you win the game.”

The old man said, “If I win the game, I’d like one【小题5】 of rice for the first square of the chessboard, two for the second, four for the third, and then 【小题6】 the【小题7】 for each of the rest of the squares.”

The king and the old man played the game for a long time. Finally, the old man won. So the king ordered his men to collect a bag of rice. The king quickly【小题8】 the problem—【小题9】 with all the rice in the country, he would still not have 【小题10】 rice to put on all the squares.