Question

2/2.4+2/4.6+....+2/2010.2012

Answer 1

Đặt A = 2/2.4+2/4.6+....+2/2010.2012

         = 1/2 - 1/4 + 1/4 - 1/6 + ...... + 1/2010 - 1/2012

        = 1/2 - 1/2012

        = 1005/2012

Answer 2

2/2.4+2/4.6+...+2/2010.2012

= 1/2-1/4+1/4-1/6+...+1/2010-1/2012

= 1/2-1/2012

= 1006/2012-1/2012

= 1005/2012

Answer 3

1/2-1/4+1/4-1/6+....+1/2010-1/2012

2

1/2-1/2012

2

1005/2024