英文數學問題 5

2009-08-10 11:30 pm
1. The HCF and LCM of two numbers are 6 and 108 respectively.If the two numbers are 12 and X ,find the X. (X is a multiple of 6 and factor of 108.)
2. There are two numbers.Neither of them is a multple of the other.Find two pairs of possible values of the numbers if their HCF is 16.

回答 (2)

2009-08-11 1:33 am
✔ 最佳答案
1. 12的因子是2, 2, 3
54的因子是2,3,3,3
所以12及54的LCM是2x2x3x3x3=108
12及54的HCF是2x3=6


2. 32的因子是2,2,2,2,2
48的因子是2,2,2,2,3
So their HCF=2x2x2x2=16


80的因子是2,2,2,2,5
112的因子是2,2,2,2,7
So their HCF=2x2x2x2=16

Therefore,the two pairs of possible values arer 32,48 & 80,112

2009-08-10 17:34:10 補充:
1.Therefore,x=54

2009-08-15 14:45:04 補充:
mak1157 just show he ans ,並不是由問題找答案。邏輯上是錯的 too.
參考: Myself
2009-08-10 11:52 pm
The answers should be:

1. 54

2. 32 & 48 or 32 & 80

2009-08-14 15:21:57 補充:
billy 係用個答案去解釋問題,並不是由問題找答案。邏輯上是錯的。


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