10, 9, 60, 90, 70, 66, ?

20. What number comes next in the sequence: 10, 9, 60, 90, 70, 66, ?

A) 96
B) 1000000000000000000000000000000000\
0000000000000000000000000000000000\
000000000000000000000000000000000
C) Either of the above
D) None of the above

This can be looked up and found to be sequence A052196 in the On-Line Encyclopedia of Integer Sequences, which gives the largest positive integer whose English name has n letters. For example, the first few terms are ten, nine, sixty, ninety, seventy, sixty-six, ninety-six, …. A more correct sequence might be ten, nine, sixty, googol, seventy, sixty-six, ninety-six, googolplex. And also note, incidentally, that the correct spelling of the mathematical term "google" differs from the name of the company that made up this aptitude test.

评论

2 楼 liudaoru 2008-09-25  

lishuai_girl 写道

sorry, I still can't get what does the anwer mean

TEN, NINE, SIXTY, NINETY, SEVENTY, SIXTY SIX, GOOGLEPLEX
3,   4,    5,     6,      7,       8,         9

就是长度为n的英文名称的代表的数字的最大值，比如三个字母的英文名称的数字是ten，其他还有one，two，six。

1 楼 lishuai_girl 2008-09-24  

sorry, I still can't get what does the anwer mean