Question

what is the sum of the digits from 1 to 100?
1+2+3+........+100=?​

Answer 1

it is 5050.

It is calculated as 100×101/2

in fact for every no. it is n×n+1/2

Answer 2

Step-by-step explanation:

This can Be done By Arithmetic Progression

a=1 an=100 n=100

so

by formula

s=n/2(a+an)

s=100/2(1+100)

s=50*101

I.e 5050

Hope It helps

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