Răspuns :
1) 9 2)10 3)3 numerele naturale sunt
1)1,2,3,4,5,6,7,8,9
2)0,1,2,3,4,5,6,7,8,9
3)7,8,9
1)1,2,3,4,5,6,7,8,9
2)0,1,2,3,4,5,6,7,8,9
3)7,8,9