Question

2/7; 3/14; 4/21; … Найдите 5-го члена цепочки

Answer 1

$\displaystyle\bf\\\frac{2}{7} \ ; \ \frac{3}{14} \ ; \ \frac{4}{21} \ ; \ \frac{5}{28} \ ; \ \boxed{\frac{6}{35} }$

Answer 2

Объяснение:

$\frac{2}{7};\ \frac{3}{14} ;\ \frac{4}{21};\ ...\\\frac{2}{7};\ \frac{3}{14} ;\ \frac{4}{21};\ ...;\ \frac{n+1}{7n} .\\ \frac{2}{7};\ \frac{3}{14} ;\ \frac{4}{21};\ \frac{5}{28} ;\ \frac{6}{35};\ ...$