Ответ:The addition is performed in base 8.5 + 1 = 6.4 + 4 = 8, which is 10 in base 8 (0 with a carry-over of 1).2 + 7 + 1 (carry-over) = 10, which is 12 in base 8.Thus, 245₈ + 741₈ = 1206₈.