Răspuns :
nr. ab
a<b
12,14,16,18,24,26,28,34,36,38,46,48,56,58,68,78
12+14+16+18+24+26+28+34+36+38+46+48+56+58+68+78=586
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Răspuns:
nr pare sunt 0,2,4,6,8
numerele pare de formă ab unde a < b sunt:
12,14,16,18,24,26,28,34,36,38,46,48,56,58,68,78
S=12+14+16+18+24+26+28+34+36+38+46+48+56+58+68+78
S=600