AJUTORRRRRRRRRRRRRRRRRRRRRRRRRRRRRR!!!!

Fractiile de forma 0,2ab care rotunjite la zecimi dau 0,3 sunt:
0,250; 0,251; 0,252; .....; 0,299
ab∈{50; 51; 52; .....; 99}
de la 50 la 99 sunt 99-50+1=50 de numere
=> deci, 50 de fractii