Răspuns:
A={5/5, 25/5^2, 15/15, 49/49}
B={1/3, 2/5, 3/2^2, 3/6, 9/19, 16/25, 28/72}
C={3/2, 7/4, 12/7, 20/17, 51/32, 96/55}