Which of the following is/are NOT an arithmetic sequence?
a. 3, −1, −5, −9, …
b. 3/5, 4/5, 1, 6/5, …
c. -54, -18, -6, -2, …
d. 8, 11, 14, 17, …
a. 3, −1, −5, −9, …
b. 3/5, 4/5, 1, 6/5, …
c. -54, -18, -6, -2, …
d. 8, 11, 14, 17, …
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Answer:
The following are not examples ofarithmetic sequences: 1.) 2,4,8,16 is notbecause the difference between first and second term is 2, but the difference between second and third term is 4, and the difference between third and fourth term is 8. No common difference so it isnot an arithmetic sequence