a = 3.4.5.6.7.8 a = 6 valori
b=10,11,12,13,14,15 b = 6 valori
⇒ 6·6 = 36 fractii
ireductibile daca a si b prime intre ele
3/10 , 3/11 , 3/13 , 3/14
4/11 , 4/13 , 4/15
5/11 , 5/12 , 5/13 , 5/14
6/11 , 6/13 ,
7/10.7/11, 7 /12 , 7/13 , 7/15
8/11,8/13 , 8/15
p = 21 / 36 = 7 /12 =0,58 = 58 %