Question

Tell whether the following is an arithmetic sequence or an arithmetic series -2 + 3 + 8 + 13

Answer 1

Arithmetic Sequence

1) Examining the sequence -2, 3, 8 , 13

We can pick two terms and subtract them to find out whether it is or not an Arithmetic Sequence

13 -8 = 5

8-3 = 5

3 - (-2) = 5

2) So it is an Arithmetic Sequence whose common ratio is r= 5