Răspuns:
Explicație pas cu pas:
5 a)70 b)390 c) 7210 sau 7200 d) 810,820,830,840,850,860,890
6)a) 790,792,794,796,798
b)604,614,624,634,654,674,644,664,684,694
c)800,822,844,866,888
d)194,294,394,494,594,694,794,894,994
7)a)570,575
b)600,610,620,60,640,650,660,670,680,690
c)185,285,385,485,585,685,785,885,985
d)2060,2065
8)a)702,732,762,792
b)951,954,947
c)2031,2034,2037
d)240,540,840