Question

4. (a) Find the sum of all odd integers between 10 and 110, which are divisible by 3.​

Answer 1

Answer:

use sum of n terms formula you will get the answer as 1872

when

a=12,d=3,last term =105 and you need to find n first .

then you will get n=32

by using Sn=n/2{2a+(n-1)d}

u will get he answer