问答题P(x) = the number of distinct prime factors of x

题目
问答题
P(x) = the number of distinct prime factors of x

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参考答案和解析
正确答案: C
解析:
因为350 = 35 × 10 = 5 × 7 × 2 ×5,所以A= P(350)=3;因为120=2 × 2 × 3 × 2 × 5,所以B= P(120)=3,所以A=B,故本题选C项