Question

-0.5,-1.0,-1.5.....;10 terms fiNd the sum of indicated number of terms in each of following A.P.S​

Answer 1

give AP:0.6,1.7,2.8,.....

A=0.6

B=1.7-0.6=1.1

N=100

SN=n/2 [2a+(n-1)d]

=100/2[2(0.6)+(100-1)×1.1]

=50 [1.2+(99×1.1)]

=50 [1.2+108.9]

=50 [110.1]

=5505