两道题目,前一题 4个 1/4,后一题 5个 1/4,怎样计算都等于 1/8,是吗?(1/4) X (1/4) + (1/4) X (1/4) = (1/16) + (1/16) = (2/16) = 1/8(1/4) X [ (1/4) + (1/4) ] + (1/4) - (1/4)=(1/4) X (1/2) =1/8...