Question

Nhìn rối mắt quá nhưng giúp mk nha

Vt cả bc giải ra nhs

k ghi mỗi đ/án

Answer 1

a: \(=\dfrac{1}{6}\cdot\dfrac{2}{2}\cdot\dfrac{3}{3}\cdot\dfrac{4}{4}\cdot\dfrac{5}{5}=\dfrac{1}{6}\)

b: \(=\dfrac{1}{10}\cdot\dfrac{2}{9}\cdot\dfrac{9}{2}\cdot\dfrac{3}{8}\cdot\dfrac{8}{3}\cdot\dfrac{4}{7}\cdot\dfrac{7}{4}\cdot\dfrac{5}{6}\cdot\dfrac{6}{5}=\dfrac{1}{10}\)