The number obtained from the last two nonzero digits of 90!is equal to n.What is and why?
问题描述:
The number obtained from the last two nonzero digits of 90!is equal to n.What is
and why?
答
12
题目的意思是,90的阶乘最后两位非零数字是多少?
也就是说算出90的阶乘是1485715964481761497309522733620825737885569961284688766942216863704985393094065876545992131370884059645617234469978112000000000000000000000
从而得出是12
答
A 第一个空的中心词是number,就是“一个”数第二个空的中心词是省略了的students,复数 the number of.的数量,是一个整体概念,动词用