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n is an even integer. Column A Column B The number of different prime factors of n
n is an even integer. Column A Column B The number of different prime factors of n
admin
2009-05-19
115
问题
n is an even integer.
Column A Column B
The number of different prime factors of n The number of different prime factors of 2n
选项
A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given
答案
C
解析
本题的正确答案为(C)。比较的左项为n的不同质因子(prime factor)数,比较的右项为2n的不同质因子数。对于2来说,只有1个质因子,即2本身;而n为偶数,所以2本来就是n的质因子,因此,n与2n的质因子数相同。
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本试题收录于:
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