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| 本帖最後由 donald63 於 14-9-7 11:51 編輯 
 1.Find the H.C.Fof the following pairs of numbers.
 a. 2 x 3 x 5.3 x 5 x 7
 b. 3(2次方) x 7.2(3次方) X 5
 
 2. Find the L.C.M.of the following pairs of numbers.
 a. 2 X 5(2次方) x 11.2(2次方) x 5(3次方)
 b. 3(2次方) x7(2次方) , 2(2次方) x 5
 
 
 3 .It is known that the H.C.F of a given number and 28 is 2. Find two possible values of the given number,
 
 4. It is known that the L.C.M of a given number and 18 is 72. Fing two possible values of the given number.
 
 
 要步驟及答案, 謝謝!
 
 
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