which of the following is not arithmetic sequence?
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The following are not examples of arithmetic sequences: 1.) 2,4,8,16 is not because 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 is not an arithmetic sequence.
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13. d
14. b
15. a
16. a
17. d
18. c
19 needs solution to show and it's up to you..
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