Question

5, -10, 20, ...; 6th term
What is the 6th term?

Answer 1

20

Explanation:

To get to -10 from 5 you have to subtract 15

to get to 20 from -10 you have to add 30

Repeat that process until you get to the 6th term.

5 (1st term)

5 - 15 = -10 (2nd term)

-10 + 30 = 20 (3rd term)

20 - 15 = 5 (4th term)

5 + 30 = 35 (5th term)

35 - 15 = 20 (6th term)