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PS181-210
How many prime numbers between 1 and 100 are factors of 7,150 ?
A.One
B.Two
C.Three
D.Four
E.Five
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答案：
D
7150=5^2*2*1
問1~100之間有多少個(gè)質(zhì)數(shù)是7150的因子？
拆分后，發(fā)現(xiàn)是質(zhì)數(shù)的有5/2/13/11共4個(gè) 選d
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