If we lef <a>be the greatest prime number not more than a,
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If we lef <a>be the greatest prime number not more than a,then resuly of the expression<<3>×<25>×<30>( ) A.1333 B.1999 C.2001 D.2249
LEF应该是LET,RESULY应该是RESULT吧
题目意思是:如果定义<a>是求不大于a的最大素数,那么表达式
< <3> * <25> * <30> >
的结果是?
.< <3> * <25> * <30> >
=< 3 * 23 * 29 >
=< 2001 >
=1999
选B
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