Question

Look at the following number sequence.

Answer 1

Answer:

the next two terms would be 18 and 21

Answer 2

Answer:

18, 21

Step-by-step explanation:

By finding the difference between each term, you can find the pattern. 9-6=3, 12-9=3, 15-12=3, so we know that each term is 3 more than the last.

Therefore, by following the pattern of +3, the next term is 15+3=18 and the one after that is 18+3 = 21