Question

How to find sum of first 100 natural numbers?

Answer 1

1 ,2 ,3 _ _ _ 100
a = 1
d = 1
an = 100
n = 100
So
Sn = n / 2 ( a + l )
= 100/2 ( 1 + 100)
50 × 101
= 5050
so sum of first 100 natural no.. is 5050

Answer 2

Hey mate:
^^^^^^^^^^

Here is yr answer ______________________________


Formula for finding the sum of the natural nos ---------


$= > \: \frac{n(n + 1)}{2} \\ \\ n = 100 \\ \\ = > \: \frac{100(100 + 1)}{2} \\ \\ = > \: \frac{100(101)}{2} \\ \\ = > \: \frac{10100}{2} \\ \\ = > \: 5050$
Therefore,the sum of the first 100 natural nos is 5050

Hope it hlpzz...