如图：
设第一题奖品x件，则总共有奖品:9x + (1 + 2 + ... + 8) m = 9x + 36m且13x = x + 8m所以有二元一次方程组3x = 2m9x + 36m = 126所以9x + 54x = 63x = 126, x = 2所以m = 3所以最后一题奖品x + 8m = 2 + 8*3 = 26
