Indicate whether the sequence is arithmetic, geometric, or neither. Give the next two terms in the sequence.
-1, 10, 11, 21, 32, . . .
A)Geometric; 53; 85
B)Neither; 53; 85
C)Arithmetic; 53; 85

Question

Quizplus · Accepted Answer

The sequence is neither arithmetic nor geometric because the difference between consecutive terms is not constant, nor is there a constant ratio. The pattern seems to be adding 9, then 1, then 10, then 11, suggesting the next differences could be 12 and then 13, making the next terms 44 and 57, not 53 and 85. My mistake in the explanation; the correct pattern involves adding successive numbers starting from 9 (9, 1, 10, 11, etc.), which indeed results in the next terms being 44 and 57, not 53 and 85 as initially stated.

Indicate Whether the Sequence Is Arithmetic, Geometric, or Neither