Question

Tìm số tự nhiên X biết: \(1\frac{1}{5}\) x \(1\frac{1}{6}\) x \(1\frac{1}{7}\) x ... x \(1\frac{1}{2014}\) = X
Trả lời: X = ...

Answer 1

\(1\frac{1}{5}\times1\frac{1}{6}\times.......\times1\frac{1}{2014}=x\)

\(\frac{6}{5}.\frac{7}{6}.........\frac{2015}{2014}=x\)

\(\frac{2015}{5}=x\)

\(x=403\)

Answer 2

\(1\frac{1}{5}.1\frac{1}{6}.1\frac{1}{7}...1\frac{1}{2014}=x\)

\(\frac{6}{5}.\frac{7}{6}.\frac{8}{7}...\frac{2015}{2014}=x\)

\(\frac{2015}{5}=x\)

\(x=403\)

Vậy x = 403

Ủng hộ mk nha ^_^