Question

Find the pattern and fill in the missing numbers: 0, …, 9, 18, 30, 45, ...

Answer 1

it is 9

and it is also 54

Answer 2

Answer:

3 and 63.

Step-by-step explanation:

The sequence formula is $\frac{3n(n+1)}{2}$.

Resulting in a sequence of 0, 3, 9, 18, 30, 45, 63.