难割难舍中国心2013-09-12 16:11:25

What is the missing number in this series?

73, 12, 6, 3, 5,      , 4, 4

(1) 10 (2) 55 (3) 6 (4) 20 (5) 4


 

yasas2013-09-23 13:38:45
不会,公布答案吧