\(\left(\frac{1}{2}+\frac{1}{3}\right)\times\frac{2}{5}\)
\(C1:\frac{5}{6}\times\frac{2}{5}=\frac{1}{3}\)
\(C2:\frac{1}{2}\times\frac{2}{5}+\frac{1}{3}\times\frac{2}{5}=\frac{1}{5}+\frac{2}{15}=\frac{1}{3}\)
c1:=5/6 x 2/5
=1/3
c2:=1/2 x 2/5+1/3 x 2/5
=1/5+3/10
=5/15
=1/3
**** cho mình nha