Question

\(1\frac{1}{2}\times1\frac{1}{3}\times1\frac{1}{4}\times...\times1\frac{1}{2017}\)

Answer 1

Ta có : \(1\frac{1}{2}\times1\frac{1}{3}\times1\frac{1}{4}\times.....\times1\frac{1}{2017}\)

\(=\frac{3}{2}.\frac{4}{3}.\frac{5}{4}.....\frac{2018}{2017}\)

\(=\frac{2018}{2}=1009\)

Answer 2

\(1\frac{1}{2}\times1\frac{1}{3}\times1\frac{1}{4}\times....\times1\frac{1}{2017}\)

\(=\frac{3}{2}\times\frac{4}{3}\times\frac{5}{4}\times...\times\frac{2018}{2017}\)

\(=\frac{3\times4\times5\times.....\times2018}{2\times3\times4\times.....\times2017}\)

\(=\frac{2018}{2}=1009\)

Answer 3

Cảm ơn nha 

Nếu được 2 bạn kb với mk nhé