Common diffrence is 4/12,the next number is 15/12 + 4/12 = 19/12 .
3/12,7/12,11/12,15/12 arithmetic progression.
所有跟帖:
• 谢谢 -breehm- ♀ (0 bytes) () 12/16/2016 postreply 11:54:44
• 不用谢,有题尽管问. -jinjing- ♀ (0 bytes) () 12/20/2016 postreply 15:49:10
• 另一种算法得数也是19/12, 虽然笨了些,却发现了个有趣的规律----- -dream_pillow- ♂ (215 bytes) () 01/10/2017 postreply 19:43:59