calculeaza 1/3+2/3+.......+2016/3

Răspuns :

sper ca e bine...........
Vezi imaginea ENGLISHZZBOI

1 / 3 + 2 / 3 + .......+ 2016 / 3 =

= ( 1 + 2 + 3 + .......+ 2016 ) / 3 =

= [ 2016 x ( 1 + 2016 ) ] / 6 =

= 336 x 2017 =

= 677 712