Janek191:
I Ω I = 15*14 = 210
A' = { (2,4),(2,6),(2,8),(2,10),(2,12),(2,14),( 4,2),(4,6),(4,8),(4,10),(4,12),(4,14),
( 6,2),(6,4),(6,8),(6,10),(6,12),(6,14),(8,2),(8,4),(8,6),)8,10),(8,12),(8,14),
(10,2),(10,4),(10,6),(10,8),(10,12),(10,14),(12,2),(12,4),(12,6),(12,8),(12,10),(12,14),
(14,2),(14,4),(14,6),(14,8),(14,10),(14,12)}
lub bez wypisywania
I A ' I = 7*6 = 42
więc