Question

(1- 1/5)*(1- 1/6)*(1- 1/7)*(1- 1/8)*(1- 1/9) решите с решением)ответ сразу не надо

Answer 1

$( \frac{5}{5} - \frac{1}{5} ) \times ( \frac{6}{6} - \frac{1}{6} ) \times ( \frac{7}{7} - \frac{1}{7} ) \times ( \frac{8}{8} - \frac{1}{8} ) \times ( \frac{9}{9} - \frac{1}{9} ) = ( \frac{4 \times 5}{5 \times 6} ) \times ( \frac{6 \times 7}{7 \times 8} )( \frac{8}{9} ) = \frac{2 \times 3 \times 8}{3 \times 4 \times 9} = \frac{4}{9}$