20)
2475,2476,2477
7988,7989,7990
6009,6010,6011
2997,2998,2999
999,1000,1001
7498,7499,7500
21)
a) 1000,9999
b)1023,9876
c)1000,9998
d)1001,9999
22)
1089,1098,1809,1890,1908,1980
8019,8091,8109,8190,8901,8910
9018,9081,9108,9180,9801,9810
Care este cel mai mare numar?(9810)
Dar cel mai mic?(1089)