Answers

2015-09-07T20:57:56+08:00
2015-09-14T19:32:03+08:00
6,12,18,24,30,36,42,48,54,60
7,14,21,28,35,42,49,56,63,70
8,16,24,32,40,48,56,64,72,80
9,18,27,36,45,54,63,72,81,90
0