题库搜索>问题求解PS-13398
If K is an integer and (0.0025)∗(0.025)∗(0.00025)∗10k is an integer, what is the least possible value of K?
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
我有更好的解析 
暂无雷哥网文字解析
0.0025=25* （1/10）^4
0.025=25* （1/10）^3
0.00025=25*（1/10）^5
以上3个相乘= （1/10）^12
k最小值得是12
科目：
问题求解PS
来源：
GWD
题目信息1m16s
平均耗时
90.9%
平均正确率
该题由网友aZbqbn提供
点击上传问题求解PS -17755
Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time without replacement, how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 10?
问题求解PS -17752
Which of the following describes the set of all possible values of the positive integer k such that, for each positve odd integer n, the value of nk is midway between consecutive integers？
问题求解PS -17741
The sum of the first 100 positive integers is 5,050. What is the sum of the first 200 positive integers?
问题求解PS -16762
【OG20-P150-27题】Set X consists of eight consecutive integers. Set Y consists of all the integers that result from adding 4 to each of the integers in set X and all the integers that result from subtracting 4 from each of the integers in set X. How many more integers are there in set Y tha...
问题求解PS -15114
The sum of the first n positive perfect squares, where n is a positive integer, is given by the formula n33 +cn2 +n6 , where c is a constant. What is the sum of the first 15 positive perfect squares?
问题求解PS -17755
Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time without replacement, how many must be drawn to ensure that the numbers on two of the slips drawn will have a sum of 10?
问题求解PS -17752
Which of the following describes the set of all possible values of the positive integer k such that, for each positve odd integer n, the value of nk is midway between consecutive integers？
问题求解PS -17741
The sum of the first 100 positive integers is 5,050. What is the sum of the first 200 positive integers?
问题求解PS -16762
【OG20-P150-27题】Set X consists of eight consecutive integers. Set Y consists of all the integers that result from adding 4 to each of the integers in set X and all the integers that result from subtracting 4 from each of the integers in set X. How many more integers are there in set Y tha...
问题求解PS -15114
The sum of the first n positive perfect squares, where n is a positive integer, is given by the formula n33 +cn2 +n6 , where c is a constant. What is the sum of the first 15 positive perfect squares?
分享
周末、晚班滚动开班 
24+35+35+6课时 
