Question

1+2+3+4+5+........+100=​

Answer 1

Step-by-step explanation:

Sum of First n Natural Numbers=> 1+ 2+ ... + n = n(n+1) / 2,

here, n=100.

=> 100(100+1)/2

=> 50×101

=> 5050.

Answer 2

Step-by-step explanation:

Sum of First n Natural Numbers=> 1+ 2+ ... + n = n(n+1) / 2,

here, n=100.

=> 100(100+1)/2

=> 50×101

=> 5050.