Răspuns:
[tex]13 \times 19 = 247 \\ {5}^{2} \times 11 = 25 \times 11 = 275 \\ 5 \times {11}^{3} = 5 \times 33 = 165 \\ {5}^{2} \times {11}^{2} = 25 \times 22 = 550 \\ {5}^{3} \times {11}^{3} = 125 \times 33 = 4125 \\ 5 \times 11 \times 13 = 55 \times 13 = 715[/tex]
