Răspuns :
1/4 ,2/4,3/4
1/3,2/3
1/7, 2/7,3/7,4/7,5/7,6/7
1/2
1/6,2/6,3/6,4/6,5/6
(/ inseamna supra)
1/3,2/3
1/7, 2/7,3/7,4/7,5/7,6/7
1/2
1/6,2/6,3/6,4/6,5/6
(/ inseamna supra)