Question

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

Answer 1

\(1\frac{1}{5}\cdot1\frac{1}{6}\cdot...\cdot1\frac{1}{2014}=x\)

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

\(\frac{6\cdot7\cdot...\cdot2015}{5\cdot6\cdot...\cdot2014}=x\)

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

\(2015:5=x\)

 \(403=x\)

Vậy  : \(x=403\)