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Which of the following sequences are ari...

Which of the following sequences are arithmetic progressions? Justify.
(i) 2,6,10,14,…………
(ii) 24,21,18,15,……
(iii) 4,12, 36, 108,……….
(iv) `1,3/2, 2,5/2`……….
(v) `-50, -75, -100`………
(vi) `12, 2, -8, -18`,…….. ,
(vii) `1, 3, 6,10`,...........
(viii) `1,4, 7,10`,............

Text Solution

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The correct Answer is:
Not an A.P. (iii), (vii)
A.P. I, ii, iv, v, vi, viii
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