Answer: 29, 36, 38
Step-by-step explanation:
The sequence starts with 2 and proceeds to go to 9, which is a difference of 7.
After 9 it is 11, and the difference is 2.
After 11 it is 18 which is a difference of 7 again.
The pattern is difference of 7, difference of 2.
Since there was a difference of 7 between 20 and 27, the next difference will be 2, which is 29.
So, the pattern is +2, +7, +2 . . .
Therefore, your next three numbers will be 29, 36, 38