Question

(1-1/12)×(1-1/11)×(1-1/10)×(1-1/9)×(1-1/8)

Giúp em😭❤

Answer 1

(1-1/12) x (1-1/11) x (1-1/10) x (1-1/9) x (1-1/8)

=(1-1) x  (1/12+1/11+1/10+1/9+1/8)

=0 x (1/12+1/11+1/10+1/9+1/8)

=0

ko bt có đúng ko nữa

Answer 2

\(\left(1-\frac{1}{12}\right).\left(1-\frac{1}{11}\right).\left(1-\frac{1}{10}\right).\left(1-\frac{1}{9}\right).\left(1-\frac{1}{8}\right)\)

\(=\frac{11}{12}.\frac{10}{11}.\frac{9}{10}.\frac{8}{9}.\frac{7}{8}\)

\(=\frac{11.10.9.8.7}{12.11.10.9.8}\)

\(=\frac{7}{12}\)