Find the sum of each of the following Ap...

Find the sum of each of the following Aps:
(i) 2, 7, 12, 17, … to 19 terms
(ii) 9, 7, 5, 3,…. To 14 terms.
(iii) -37, -33, -29,… to 12 terms
(iv) `(1)/(15), (1)/(12), (1)/(10),… ` to 11 terms.
(v) 0.6, 1.7, 2.8, …. to 100 terms

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The correct Answer is:

(i) 893 (ii) -56 (iii) - 80 (iv) `(33)/(20)` (v) 5505

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