Question

[31. Vũ Thị Kim Ngân]

Tính Nhanh 

1/2 x 2/3 x 3/4 x 4/5 x 5/6 x 6/7 x 7/8 x 8/9

Cho mik xin lời giải luôn ạ ( nếu được )

Answer 1

[Ngủ ✰_]

1/9

Answer 2

[★彡✿ทợท彡★]

\(\dfrac{1}{2}\times\dfrac{2}{3}\times\dfrac{3}{4}\times\dfrac{4}{5}\times\dfrac{5}{6}\times\dfrac{6}{7}\times\dfrac{7}{8}\times\dfrac{8}{9}\)

\(=\dfrac{1\times2\times3\times4\times5\times6\times7\times8}{2\times3\times4\times5\times6\times7\times8\times9}\)

\(=\dfrac{1}{9}\)