这题看不懂,P is the set of positive factors of 20 and Q is the se
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这题看不懂,
P is the set of positive factors of 20 and Q is the set of positive factors of 12.If x is a member of set P and y is the member of set Q,what is the greatest possible vaule of x-y?
答案是19.
P is the set of positive factors of 20 and Q is the set of positive factors of 12.If x is a member of set P and y is the member of set Q,what is the greatest possible vaule of x-y?
答案是19.
factor就是系数,如6的factor是1,2,3,6.
题目:P组包括了20的所有大于0的系数,Q组包括了12所有大于0的系数.x是P之一,y是Q之一,x-y最大可以是多少
白话=20最大的系数减去12最小的系数
20最大的factor是20 (20*1=20),12最小系数是1(12*1=12),20-1=19
题目:P组包括了20的所有大于0的系数,Q组包括了12所有大于0的系数.x是P之一,y是Q之一,x-y最大可以是多少
白话=20最大的系数减去12最小的系数
20最大的factor是20 (20*1=20),12最小系数是1(12*1=12),20-1=19
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