\(\left(1+\frac{1}{2}\right)\left(1+\frac{1}{3}\right)\left(1+\frac{1}{4}\right)......\left(1+\frac{1}{9}\right)\left(1+\frac{1}{10}\right)\)
\(=\frac{3}{2}.\frac{4}{3}.\frac{5}{4}.....\frac{10}{9}.\frac{11}{10}=\frac{3.4.5......10.11}{2.3.4.....9.10}\)
\(=\frac{11}{2}\)
\(\frac{11}{2}\)\(nha\)\(bn\)\(!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\)
ỦNG HỘ NHA
Bạn Kurosaki Akatsu ơi cho mình hỏi .là gì