Question

(1-1/5)nhân(1-1/6)nhan(1-1/7)nhan(1-1/8)

Answer 1

ta có :\(\left(1-\frac{1}{5}\right)x\left(1-\frac{1}{6}\right)x\left(1-\frac{1}{7}\right)x\left(1-\frac{1}{8}\right)\)

\(=\frac{4}{5}x\frac{5}{6}x\frac{6}{7}x\frac{7}{8}=\frac{4}{8}=\frac{1}{2}\)

Answer 2

\(\left(1-\frac{1}{5}\right).\left(1-\frac{1}{6}\right).\left(1-\frac{1}{7}\right).\left(1-\frac{1}{8}\right)\)

\(=\frac{4}{5}.\frac{5}{6}.\frac{6}{7}.\frac{7}{8}\)

\(=\frac{4}{8}\)

\(=\frac{1}{2}\)

Answer 3

\(\frac{1}{2}\)