Question

Write down in terms of n, an expression of the following sequence:
9, 11, 13, 15, 17

Answer 1

The sequence is simply achieved by adding 2 to each value

9+2=11

11+2=13

13+2=15

15+2=17

17+2=19

19+2=21

so the nth term can be calculated

The value of the nth term = the value of (nth-1 term) +2.