Question

add 1to100 like 1+2+3 and Soo onn and tell ​

Answer 1

Answer:

5050

Step-by-step explanation:

use sum of n terms ap formula.

Answer 2

5050

Step-by-step explanation:

1+2+3+4........+99+100

it can be solved by A.P sum formulas

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

n= 100

a=1

d= 1

by putting all values in formula you will get

S100=5050.

therefore sum of 1+2+3+4+....99+100= 5050

I hope this will help