[tex]\frac{a+b+c+d+e+f+g+h+i+j+k}{11}[/tex]=25
[tex]\frac{a+b+c+d+e+f+g+h+i+j}{10}[/tex]=25,1
a+b+c+d+e+f+g+h+i+j+k=275
a+b+c+d+e+f+g+h+i+j=251
k=275-251
k=24
Raspuns: 24
