Question

Efectuați suma Gauss

Answer 1

3 + 6 + 9 + .... + 210
3 ( 1 + 2 + 3 + ... + 70 )


1 + 2 + 3 + ... + 70 = [ 70 ( 70 + 1) ] / 2 =
35 • 71 = 2485.


3 • 2485 = 7455.








I hope I helped you :)