Question

2-4+6-8+...-2016+2018

 

 

Answer 1

2-4+6-8+...-2016+2018

=(2-4)+(6-8)+...+(2014-2016)+2018

có 504 cặp

=-2+-2+...+-2+2018

=-2x504+2018

=-1008+2018

=1010

Answer 2

2-4+6-8+...-2016+2018

= (2+6+...+2018)- (4+8+....+2016)

=510050 - 509040

= 1010

Answer 3

=1010

K mình nha

Thanks

Answer 4

1010 bạn nhá