[tex]a=\frac{1}{5} \cdot 25^{50}=\frac{1^{100}}{5^{100}}\cdot 25^{50}=\frac{1}{5^{2\cdot 50}}\cdot 25^{50}=\frac{1}{25^{50}}\cdot 25^{50}=1[/tex]
La b se face similar cu [tex]0.25=\frac{1}{4}[/tex] si[tex]0,04=\frac{4}{100}=\frac{1}{25} [/tex] de aici ajungi la b[tex]=\left(\frac{1}{100}\right)^{25}[/tex] de unde b=0,0..01 cu 49 de 0 intre virgula si 1
