1)
100 - (18+33+35+5) = 100 - 91 = 9
100 - (10+7+33+23) = 100 - 73 = 27
100 - (10+4+33+9) = 100 - 56 = 44
2)
2+3 = 5
5+3 = 8
8+3 = 11 (primul numar aflat)
4+3 = 7
7+3 = 10
10+3 = 13 (al 2-lea numar aflat)
8+3 = 11
11+3 = 14
14+3 = 17 (al 3-lea numar aflat)
16+3 = 19
19+3 = 22
22+3 = 25 (al 4-lea numar aflat)
11 13
17 25