Jawabanmu

2014-02-14T18:54:23+07:00
Maka A B adalah 125............... ......
2014-02-14T18:54:58+07:00
A={3,4,5,6,7,8,9}
B={1,3,5,7,9,11}
A-B={1,4,6,8,11}