In line 4 the last number in the pattern is 7 . What would be the last number in line 10?
The pattern is increasing by 3 each time, so to find the last number in line 10 we need to add 6 to the last number in line 4.
7 + (3 * 6) = 7 + 18 = 25
Therefore, the last number in line 10 would be 25.