Question

12 :10 15:620:1016:7

Answer 1

15:6=2 (3ост)
20:10=2
16:7=2 (2ост)
12:10=1(2ост)

Answer 2

1)1(ост 2)
2)2(ост3)
3)2
4)14(ост2)

Answer 3

It seems like you have provided a series of numbers: 12, 10, 15, 620, 1016, and 7. However, it is not clear what you would like to know about these numbers. Could you please provide more context or specify your question so that I can assist you better?