[" 2) If the sum of the first ten terms of the series "],[[" (a) "101," (b) "100],[" (c) "99," (d) "102]]

If the sum of the first n terms of the series

Find the sum of the first 28 terms of the series.

Sum of the first 18 terms of the series 1+4+7+......

The sum of the first ten terms of the A.P. 15,10,5,….is……

Find the sum of the first n-terms of the series. 2+22+222+…..

Sum of first-ten odd numbers is:

If the sum of the first ten terms of the series (1 3/5)^2+(2 2/5)^2+(3 1/5)^2+4^2+(4 4/5)^2+. . . . . , is (16)/5 m, then m is equal to:

If the sum of the first ten terms of the series (1 3/5)^2+(2 2/5)^2+(3 1/5)^2+4^2+(4 4/5)^2+. . . . . , is (16)/5 m, then m is equal to: (1) 102 (2) 101 (3) 100 (4) 99