數學題目,好難啊!

20,26,33,35,39,42,44,55,91


(1)20*33*91=60060

(2)55*42*26=60060

(3)35*44*39=60060






2007-06-29 00:45:05 補充：
需然係試數，但要試得快也有技巧。因為有20的存在，當20再乘上其餘兩個數後，其個位始終為0，因此只要將所有數的個位抽出來，找出乘起來個位是0的三個數。那很容易就可以試出答案來ga la。

(1)91x20x33=60060

(2)26x55x42=60060

(3)44x39x35=60060

20,26,33,35,39,42,44,55,91
91x20x33=60060
26x55x42=60060
44x39x35=60060

20,26,33,35,39,42,44,55,91

(1)91x20x33=60060

(2)26x55x42=60060

(3)44x39x35=60060

20,26,33,35,39,42,44,55,91

(1)91x20x33=60060

(2)26x55x42=60060

(3)44x39x35=60060


希望可以幫到你