1.

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»


ANSWER :(i) `S_(10) = 245`.
(ii)`S_(12) = -180`
(III) `S_(100) = 5505`.
(IV) `S_(11) = (33)/(20)`.


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