Question

2/2x4+2/4x6+2/6x8..................2/2014x2016

Answer 1

1007/2016

Answer 2

TA có 

4-2/2*4+6-4/4*6+8-6/6*8+...+2016-2014/2014*2016

=1/2-1/4+1/4-1/6+...+1/2014-1/2016

=1/2+1/4-1/4+1/6-1/6+...+1/2014-1/2014-1/2016

=1/2-1/2016

=1007/2016

Answer 3

2/2x4+2/4x6+2/6x8+......................+2/2014x2016

=1/2-`1/4+1/4-1/6+1/6-1/8 +..............................+1/2014-1/2016

=1/2-1/2016

=1007/2016

Answer 4

mơn các bạn nhiều nha (^.^) hihi