Answer:
3,6,9,12,15,18,21,24,27,30
Step-by-step explanation:
You need to multipy 3 by 1, by 2, by 3, and so on....
9
To find the median of a set of data, arrange the data by value:
6, 7, 9, 12, 13
The number in the middle is the median.
