Răspunsuri

2014-10-08T20:18:38+03:00
390 de pagini, deoarece:
10,20,30,40,50,60,70,80,90,100
110,120,130,140,150..........200
.......................................300
310,320....390
scuze dar nu e corect multumesc oricum mi-am dat seama cum sa-l rezolv... :)
2014-10-08T20:26:19+03:00
390 este numarul corect