Is the positive integer j divisible by a greater number of different prime number than positive integer k ?
1) j is divisible by 30
2) K=1000
答案是C 请问怎么得到结果的
谢谢大家
J可以被30除,所以至少包括了2,3,5
1000=5^3 * 2^3,最多也只有2,5
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