Question

Aflati toate numerele naturale pentru care avem:
a)a38=3b8
b)a2b3=b2a3
c)xyz=zyx

Answer 1

a) a = 3
b = 3
338 = 338

b) a = b, 1213, 2223, 3233, 4243, 5253, 6263, 7273, 8283, 9293

c) x = z > 0
101, 202, 303, 404, 505, 606, 707, 808, 909
111, 212, 313, 414, 515, 616, 717, 818, 919
121, 222, 323, 424, 525, 626, 727, 828, 929
131, 232, 333, 434, 535, 636, 737, 838, 939
samd
pana la:
191, 292, 393, 494, 595, 696, 797, 898, 999