Which of the following sequences is NOT an arithmetic progression?

MATHEMATICS · Single correct · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

Which of the following sequences is NOT an arithmetic progression? (a) 12,  9,  6,  312,\;9,\;6,\;3 (b) 2,  5,  9,  132,\;5,\;9,\;13 (c) 12,  1,  32,  2\dfrac12,\;1,\;\dfrac32,\;2 (d) 3,  3,  3,  33,\;3,\;3,\;3

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