\(=\frac{1}{2}\times\frac{2}{3}\times\frac{3}{4}\times...........\times\frac{2015}{2016}\)
\(=\frac{1\times2\times3\times......\times2015}{2\times3\times4\times.......\times2016}\)
\(=\frac{1}{2016}\)
\(\left(1-\frac{1}{2}\right)x\left(1-\frac{1}{3}\right)x...x\left(1-\frac{1}{2016}\right)\)
\(=\frac{1}{2}.\frac{2}{3}.\frac{3}{4}......\frac{2015}{2016}\)
\(=\frac{1.2.3.....2015}{2.3.4.....2016}=\frac{1}{2016}\)
Ủng hộ nha!!!