\(M=\dfrac{3}{2}\times\dfrac{4}{3}\times\dfrac{5}{4}\times\dfrac{6}{5}\times\dfrac{7}{6}\times\dfrac{8}{7}\times\dfrac{9}{8}\times\dfrac{10}{9}\times\dfrac{11}{10}\)
\(M=\dfrac{11}{20}\)
\(\dfrac{3}{2}\) x \(\dfrac{4}{3}\)x \(\dfrac{5}{4}\)x\(\dfrac{6}{5}\)x \(\dfrac{7}{6}\)x\(\dfrac{8}{7}\)x\(\dfrac{9}{8}\)x\(\dfrac{10}{9}\)x\(\dfrac{11}{10}\)
= \(\dfrac{3x4x5x6x7x8x9x10x11}{2x3x4x5x6x7x8x9x10}\)
= 11/20
\(\dfrac{3}{2}\) x \(\dfrac{4}{3}\) x \(\dfrac{5}{4}\) x \(\dfrac{6}{5}\) x \(\dfrac{7}{6}\) x \(\dfrac{8}{7}\) x \(\dfrac{9}{8}\) x \(\dfrac{10}{9}\) x \(\dfrac{11}{10}\)
\(\dfrac{\text{3 × 4 × 5 × 6 × 7 × 8 × 9 × 10 × 11}}{\text{2 × 3 × 4 × 5 × 6 × 7 × 8 × 9 × 10}}\)
\(\dfrac{11}{2}\)
4 và 5
