Răspuns :
a) 11 = [tex]\frac{11}{1}[/tex]
[tex]\frac{25}{10} = \frac{5}{2}[/tex]
[tex]\frac{525}{100} = \frac{21}{4}[/tex]
[tex]\frac{4375}{100} = \frac{175}{4}[/tex]
[tex]\frac{125125}{1000} = \frac{1001}{8}[/tex]
b) [11] = 11
[2,5] = 2
[5,25] = 5
[43,75] = 43
[125,125] = 125
c) {11} = 0
{2,5} = 0,5
{5,25} = 0,25
{43,75} = 0,75
{125,125} = 0,125