Răspuns:
Explicație pas cu pas:
[tex]\frac{1}{3} + \frac{1}{3} /2+ \frac{1}{3}/3+ \frac{1}{3} /4 + \frac{1}{3} 5+ \frac{1}{3} /6= \\\\\\frac{1}{3} + \frac{1}{3} *\frac{1}{2} + \frac{1}{3} *\frac{1}{3} + \frac{1}{3}*\frac{1}{4}+\frac{1}{3}*\frac{1}{5}+\frac{1}{3}*\frac{1}{6}=\\\\\frac{1}{3}+\frac{1}{6}+\frac{1}{9}+\frac{1}{12}+\frac{1}{15}+\frac{1}{18}=\\\\\frac{49}{60}=0,816[/tex]
