单选题 There was once a millionaire who loved money more than 1 in the world. He didn"t know 2 how much he had. So he sent a little girl to count all his money for him.
It took the little girl six days to 3 all the money. When she told the millionaire that he had forty-two 4 dollars, he was wild with 5 and asked, "How 6 do you want?" He thought that because she was only a child, he could cheat her 7 taking very small 8 .
The little girl said, "Well, I worked for six days, so I think you 9 pay me for six days. Give me two pennies for the first day. Each day after that, just give me the amount you gave me 10 , multiplied by itself." The millionaire thought that in this way he would only have to give her a very 11 dollars. What a 12 little girl! So he immediately had his lawyer 13 up a contract, fearing that she would change her 14 .
For the first day, the millionaire paid her two pennies, and for the second day, two pennies times two pennies, 15 four pennies.
Each day after that, he had to give her the amount he had given her the day before, multiplied 16 itself. And on the sixth day, the 17 millionaire had to give the clever little girl all his money.
How is it 18 the girl could have all the greedy (贪婪的) millionaire"s money? 19 you are interested in it, you may try to 20 this maths problem.