Question

1 tính

A=\(\left(1-\frac{1}{2}\right)\times\left(1-\frac{1}{3}\right)\times\left(1-\frac{1}{4}\right)\times...\times\left(1-\frac{1}{2010}\right)\)

Answer 1

A = 1/2 x 2/3 x.....x 2009/2010 = 1x2x3x....x2009 / 2x3x4x.........x 2010

A = 1/ 2010

vậy A = 1/ 2010

Answer 2

\(A=\frac{1}{2}\times\frac{2}{3}\times...\times\frac{2009}{2010}\)

\(A=\frac{1\times2\times...\times2009}{2\times3\times2010}\)

\(A=\frac{1}{2010}\)

Answer 3

A = 1/2 x 2/3 x 3/4 x...x 2009/2010

A = 1/2010 ( Rút gọn Phân số )