Question

(1- 1/2 )x(1-1/3)x(1-1/4)x(1-1/5)x......x(1-1/10) =

Answer 1

\(\left(1-\frac{1}{2}\right)\times\left(1-\frac{1}{3}\right)\times\left(1-\frac{1}{4}\right)\times...\times\left(1-\frac{1}{10}\right)\)

\(=\frac{1}{2}\times\frac{2}{3}\times\frac{3}{4}\times...\times\frac{9}{10}\)

\(=\frac{1}{10}\)

Answer 2

             \(\left(1-\frac{1}{2}\right).\left(1-\frac{1}{3}\right).\left(1-\frac{1}{4}\right)...\left(1-\frac{1}{10}\right)\)

             \(=\frac{1}{2}.\frac{2}{3}.\frac{3}{4}.....\frac{9}{10}\)

             \(=\frac{1.2.3....9}{2.3.4...10}=\frac{1}{10}\)

             Ủng hộ mk nha !!! ^_^