Exemplar exercise problem XXVII — task. Mathematics CBSE, Class 10.

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1. Find whether

$55$ is a term of the AP:

$7, 10, 13,...$ or not. If yes, find which term it is.

$55$ is a term of the A.P. .

$55$ is the

$th$ term of the A.P.

2. Determine

$k$ so that

$k^2+ 4k + 8, 2k^2+ 3k + 6, 3k^2+ 4k + 4$ are three consecutive terms of an AP.

The value of

$k$ is .

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67. Exemplar exercise problem XXVII