旅人22 wrote:找出最接近不大於的值...(恕刪) 您這個問題跟 => (EXCEL函數問題,求解(還在同一頁)),幾乎一樣,順便回答好了另一種解法,請參考資料範圍:a1~d6 ,要找的值 e1d1~d6有排序=LOOKUP(1,0/(D1:D6<=E1),A1:A6)d1~d6沒有排序=LOOKUP(1,0/(D1:D6=(SMALL(D1:D6,COUNTIF(D1:D6,"<="&E1)))),A1:A6)or(排序,沒排序,通用版)=INDEX(A1:D6,MATCH(SMALL(D1:D6,COUNTIF(D1:D6,"<="&E1)),D1:D6,0),1)