a) \(\dfrac{77777}{99999}=\dfrac{7\times11111}{9\times11111}=\dfrac{7}{9}\)
b) \(\dfrac{36363636}{29292929}=\dfrac{36\times1010101}{29\times1010101}=\dfrac{36}{29}\)
c) \(\dfrac{102102102}{410410410}=\dfrac{102\times1001001}{410\times1001001}=\dfrac{102}{410}=\dfrac{51}{205}\)