Question

sum of first 40 natural numbers

Answer 1

40×(40+1)/2

=20×41

=820

is your ANSWER

Answer 2

HEY ❤️

$1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + \\ 9 + 10 + 11 + 12 + 13 + 14 + 15 \\ + 16 + 17 + 18 + 19 + 20 + 21 + \\ 22 + 23 + 24 + 25 + 26 + 27 + \\ 28 + 29 + 30 + 31 + 32 + 33 + \\ 34 + 35 + 36 + 37 + 38 + 39 + \\ 40 = 820$

HOPE IT HELPS