Mathematics

Problem

1. Find the sum of the following APs: (i)

2,7,12, \ldots

, to 10 terms. (ii)

-37,-33,-29, \ldots

, to 12 terms. (iii)

0.6,1.7,2.8, \ldots

, to 100 terms. (iv)

\frac{1}{15}, \frac{1}{12}, \frac{1}{10}, \ldots

, to 11 terms.