Question

Find the sum of following a.p.s 1)0.8,1.7,2.8___________100terms

Answer 1

Answer:

5525

Step-by-step explanation:

a= 0.8

N= 100

d= 1.1

Sn = n/2 (2a +(n-1) d)

= 100/2 (2×0.8 + 99 (1.1) )

= 50. (1.6 + 108.9)

=. 5525

HOPE IT HELPS...

Answer 2

Step-by-step explanation:

Given series :0.8,1.7,2.8....100 terms

First term (a)=0.8

Common difference (d)=

=>1.7-0.8=0.9

=>2.8-1.7=1.1

Here Common difference is not

same throughout the series.

So Given series is not in the A.P.