Analisis gw gan..... tanggal lahir = X dikali 4 = 4X tambah 13 = 4X + 13 dikali 25 = 100 X + 325 dikurang 200 = 100X + 125 bulan lahir = Y tambah Y = 100X + 125 + Y dikali 2 = 200X + 250 + 2Y dikurang 40 = 200X + 2Y + 210 dikali 50 = 10.000X + 100Y + 10.500 2 digit = Z ditambah 2 digit = 10.000X ...