Question

7, 3, -1, -5, … What is the 7th value in the sequence?

Answer 1

- 17

Explanation:

7

3 = 7 - 4

-1 = 3 - 4

-5 = -1 - 4

so the 5th: -5 - 4 = -9

the 6th: -9 - 4 = -13

and the 7th: -13 - 4 = -17