Răspunsuri

2014-10-12T16:30:17+03:00
9x10=90
pt ca a poate lua 9 valori (1,2,3,4,5,6,7,8,9)iar b poate lua 10 valori (0,1,2,3,4,5,6,7,8,9)
2014-10-12T16:32:55+03:00
A= 1,2,3,4,5,6,7,8,9 deci 9 numere
b=1,2,...,9,0
a*b=90