Question

Tell whether the sequence 1/3,0,1,.2 is arithmetic, geometric or neither. A. neither;7,-20,61 B.geometric;7,-20,61 C.arithmetic;-1/3, 1 1/3,3 D. geometric; -3 1/3,-5 5/9,-9 7/27

Answer 1

Okay is there a common difference (CD) or a common ratio (CR) between each successive term? If there is a CD, then it's an AP. If there is a CR, then it's a GP. If none, then neither.