Question

1to100 sum of all no.​

Answer 1

Answer:

What is the sum of the first 100 whole numbers?

Gauss noticed that if he was to split the numbers into two groups (1 to 50 and 51 to 100), he could add them together vertically to get a sum of 101. Gauss realized then that his final total would be 50(101) = 5050.

Answer 2

Answer:

There is a simple method to do this:

For numbers 1 to n: $\frac {n(n+1)}{2}$

So for numbers 1 to 100:

$\frac {100(100+1)}{2}$

= (50)(101)

= 5050

Hope it helps you!