Răspuns:
2x3=6 4x5=20 5x5=25 10x10=100 3x3=9 4x4=16 1-1=0 2+2=4 3+3=6 1+3 7+3=10 7+7=14 9+9=18 9-9=0 2-2=0 3-3=0 4-4=0 5-5=0