Question

Find the sum of natural numbers form 1 to 100?​

Answer 1

Answer:

5050

Step-by-step explanation:

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

n=100

a=1

d=1

so S100= 100/2(2(1)+(100-1)1)

= 50(2+99)

=50(101)

=5050

Answer 2

Answer:

5050

Step-by-step explanation:

sum of first n natural numbers = n(n+1)/2

sum of first 100 natural numbers = 100(100+1)/2

=(100×101)/2

=50×101

=5050