Question

Page No
Dato
And the sum of the numbers between 100 to 200
which
are
divisible by 5​

Answer 1

Answer:

2850

Step-by-step explanation:

The series starts from 105,110,115........,195.

As it can be seen it's an A.P

a=105

d=5

We know,

Last term of AP=1st term +(n-1)d

By calculating we get n=19(No. of terms in AP)

Also, Sn=n(a+l)/2

Where, l=Last term of AP

So, Sn=19(105+195)/2

Sn=2850