Question

1 1
,
are those which are divisible
Even natural numbers
by:
O
병
a
it
1
(c)
2
9
id,
A.​

Answer 1

Answer:

Even natural numbers: 2,4,6,8,10,....

Even natural numbers divisible by 5→10,20,30,40,.... to 100 terms

Here, a=10,d=20−10=10, and n=100

We have,

S

n

=n/2(2a+(n−1)d)

=100/2[2×10+(100−1)10]

=50500.