Find the sum of indicated number of terms in each of the following Aps
(i) 16, 11,6,….., 23 terms
(ii) `-0.5, -1.0, -1.5`,………,10 terms
(iii) `-1,1/4,3/2`,…..10 terms

Find the number of terms in each of the following APs, (i) 7,13,19,…….. 205 (ii) 18, 15 (1/2), 13,……. - 47 .

Find the sum to indicated number of terms in each of the geometric progressions in 0.15, 0.015, 0.0015 ,.........20 terms .

Find the sum to indicated number of terms in each of the geometric progressions in x^3,x^5,x^(7), .........n terms (if x ne pm 1 )

Find the sum to indicated number of terms in each of the geometric progressions in Exercises 1, - a, a^2, - a^3, .......n terms (if a ne -1 )

Find the 27^(th) term of the following A.P. 9, 4, -1,-6,-11,…

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.

If the sum of a certain number of terms of the A.P. 25, 22, 19, … is 116. Find the last term.

Find the nth terms of the following sequences 0, (1)/(2), (2)/(3), …

Find the sum of 1+3+5+…+ to 40 terms