Question

giúp e với ạ

Answer 1

\(=\dfrac{1}{2}\cdot\dfrac{2}{3}\cdot\dfrac{3}{4}\cdot...\cdot\dfrac{24}{25}\cdot\dfrac{3}{2}\cdot\dfrac{4}{3}\cdot\dfrac{5}{4}\cdot...\cdot\dfrac{26}{25}=\dfrac{1}{25}\cdot\dfrac{26}{2}=\dfrac{13}{25}\)

Answer 2

=13/25