【GMAT数】all of the following have the same number of distinct prime factors except:20,21,24,30,45【GMAT数学】all of the following have the same number of distinct prime factors except:(A)20(B)21(C)24(D)30(E)45,答案为什么是D我的理解
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![【GMAT数】all of the following have the same number of distinct prime factors except:20,21,24,30,45【GMAT数学】all of the following have the same number of distinct prime factors except:(A)20(B)21(C)24(D)30(E)45,答案为什么是D我的理解](/uploads/image/z/1009126-46-6.jpg?t=%E3%80%90GMAT%E6%95%B0%E3%80%91all+of+the+following+have+the+same+number+of+distinct+prime+factors+except%3A20%2C21%2C24%2C30%2C45%E3%80%90GMAT%E6%95%B0%E5%AD%A6%E3%80%91all+of+the+following+have+the+same+number+of+distinct+prime+factors+except%3A%28A%2920%28B%2921%28C%2924%28D%2930%28E%2945%2C%E7%AD%94%E6%A1%88%E4%B8%BA%E4%BB%80%E4%B9%88%E6%98%AFD%E6%88%91%E7%9A%84%E7%90%86%E8%A7%A3)
【GMAT数】all of the following have the same number of distinct prime factors except:20,21,24,30,45【GMAT数学】all of the following have the same number of distinct prime factors except:(A)20(B)21(C)24(D)30(E)45,答案为什么是D我的理解
【GMAT数】all of the following have the same number of distinct prime factors except:20,21,24,30,45
【GMAT数学】all of the following have the same number of distinct prime factors except:(A)20(B)21(C)24(D)30(E)45,
答案为什么是D
我的理解:20=2*2*5,21=3*7,24=2*2*2*3,30=2*3*5,45=3*3*5,
21,24,30,45的公因数3相同,所以选A,我错在哪儿?
【GMAT数】all of the following have the same number of distinct prime factors except:20,21,24,30,45【GMAT数学】all of the following have the same number of distinct prime factors except:(A)20(B)21(C)24(D)30(E)45,答案为什么是D我的理解
the same number of distinct prime factors 意思是说数量,不是数字啦,D是有3个质数,其他都是两个,所以就是它了,数学它就是有时候跟你玩文字游戏的,要小心看题的啦~
我的理20=2*2*5,21=3*7,24=2*2*2*3,30=2*3*5,45=3*3*5,
21,24,30,45的公因数3相同,所以选A,我错在哪儿?求解?
不是啊哥们,你理解错了
他问你这些数的素因数的个数不一样的是哪个,重复的是不算的哦
ABCE都是2个素因数,D是3个素因数
所以选D