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
• 不会,公布答案吧 -yasas- ♂ (0 bytes) () 09/23/2013 postreply 05:38:45