4ANSWER:
2, 9, AND
Let's sketch an image of a traditional clock first
In this problem, we have the following sequence:
3, 10, 5, 12, 7
When you count from 3 to 7 in the clock above you can see there is a differnce of 7
Also, when you count from 10 to 5, there is a differnce of 7.
Therefore there is a common difference of 7
To find the next 3 terms, we have:
From the last term given in the sequence which is 7, count 7 units, we have 2.
Also from 2 count 7 units, we get 9.
In the same way, count 7 units from 9, we get 4.
Therefore, the next three terms in order are 2, 9, and 4