Explicație pas cu pas:
10 a) 790,792,794,798,796.
b) 6044,614,624,634,644,654,664,674,674,684,694,
c) 800,822,844,866,888,
d) 194,294,394,494,594,694,794,894,994.
11) a - 575, 570
b) 600,610,620,630,640,650,660,670,68,690.
c) 185,285,385,485,585,685,785,885,985
d) 2060,2065
12,a) 702,732,762,792
b) 951,954,957
c) 2031,2034,2037
d) 240,540,840
9.a) 70
b) 390,
c) 7200,7210,7230,7240,7250,7260,7270,7280,7290
