Find the sum of the following Aps:
(i) 2, 7, 12, …….., to 10 terms.
(ii) `-37, -33, -29,` …….., to 12 terms.
(iii) 0.6, 1.7, 2.8,….., to 100 terms
(iv) `(1)/(15), (1)/(12),(1)/(10)`,……,to 11 terms

Answer

(i) `S_(10) = 245`.
(ii) `S_(12) = -180`
(iii) `S_(100) = 5505`.
(iv) `S_(11) = (33)/(20)`.