a)mulțimea M are 9 elemente
b)submulțimi din 8 elemente:
- {12,22,32,42,52,62,72,82}
- {22,32,42,52,62,72,82,92}
- {12,22,32,52,62,72,92,42}
c)toate elementele formate din 8 elemente:
- {12,22,32,42,52,62,72,82}
- {12,32,42,52,62,72,82,92}
- {12,22,42,52,62,72,82,92}
- {12,22,32,52,62,72,82,92}
- {12,22,32,42,62,72,82,92}
- {12,22,32,42,52,72,82,92}
- {12,22,32,42,52,62,82,92}
- {12,22,32,42,52,62,72,92}
- {12,22,32,42,52,62,72,82}