【诚心请教】关于OG12几道数学题~~

水色青空

由于才开始看数学，于是先把OG12看了一遍，大概了解它的考试方向~

有几道题不太明白，希望大家能帮帮忙~~若是太简单。。。。望大家不要笑话。。。。

78.Leona bought a 1-year$10,000  certificate of deposit that  paid interest at an annual rate of 8 percent compounded semiannually.What was the total amount of interest paid on this certificate at maturity?

最后的答案是816.。。完全没有看懂OG的解释？。。。。帮帮忙，貌似这道题很典型



98 on a scale that measures the intensity of a certain phenomenon,a reading of n+1 corresponds to an intensity that is 10 times the intensity corresponding to a reading of n.On that scale,the intensity correspoding to a reading of 8 is how many times as great as the intensity corresponding to a reading of 3?

有哪个好心人可以帮我解释一下题目的意思。。。。我处于一片混沌的状态。。谢谢了



151 A  toy store regularly sells all stock at a discount of 20 percent to 40 percent .If an additional 25 percent were deducted from the discount price during a special sale, what sould be the lowest possible price of a toy costing $16 before any discount?

这个题目最后的before 是不是应该是after才对呢？不然 题目好像意思不太对呀。。。？



然后是DS题。我比较不擅长这个，所以题目会多一点，谢谢呀

86 A number of people each wrote down one of the first 30 positive integers. Were any of the integers written down by more than one of the people?

这个题目也没太看懂，它的逻辑，希望NN解释一下，谢谢~~

98 seven different numbers are selected from the integers 1 to 100,and eache number is divided by 7 ,what is the sum of the remainders?

OG的解释很诡异的把这七个数字列为6 7 14 21 28 35.。。。。后面的解释我就没看，光是前面这个数字的假设我就没有想明白？？



128 A school administrator will assign each student in a group of n students to one of m classrooms.If 3<m<13<n，is it possible to assigh each of the n students to one of the m classrooms so that eache classroom has the same number of students assigned to it ?



129 What is the median number of employees assigned per projuect for the projuects at Company Z?



142What amount did Jean earn from the commission on her sales in the first half of 1988?

想问一下，这个commission是什么意思？





158 Every member of a certain club volunteers to contribute equally to the purchase of a $60 gift certificate.How many menmbers does the club have ?

18 What is the max number of rectangular blovks,each with dimensions 12 centimeters by 6 centimeters by 4 centimeters ,that will fit inside rectangular Box X?

同样的，上面的题目是我我没有看懂题目的逻辑，谢谢了~~希望能清楚的帮我解释一下~~

50 How many people are directors of both Company K and Company R?

1）There were 17 directors present at a joint meeting of the directors of Company K and R,and no directors were absent.

2) Company K has 12 directiors and Company R has 8 directors.

这个题目的逻辑没看明白？







129

nst1308

Leona bought a 1-year$10,000  certificate of deposit that  paidinterest at an annual rate of 8 percent compounded semiannually.Whatwas the total amount of interest paid on this certificate at maturity?
Leona 买了一个1年的，面值10，000的债券，债券的利息是8%每半年。 （意思就是如果你存了1块钱在银行，半年后你就有1.08块钱，一年后，你就有1.08*（1+0.08）） 不知道你理解吗？ “利滚利” 呵呵



98on a scale that measures the intensity of a certain phenomenon,areading of n+1 corresponds to an intensity that is 10 times theintensity corresponding to a reading of n.On that scale,the intensitycorrespoding to a reading of 8 is how many times as great as theintensity corresponding to a reading of 3?
翻译：一个测量仪器可以测量一种现象的强度。 如果一个测量仪读数是n+1的时候，那么它就是读数是n的时候的10倍。 问：当读数是8的时候，它是读数是3的几倍？
解： n+1=10n
     当n=3时
    那么4就是10
    那么5就是100
     6=1000
     7=10000
     8=100000

你题目太多咯，楼下继续

水色青空

噢，明白了~~原来是我没有看到半年那个词~~THANGK YOU~~~~~~~~~

Rainbeauty

86 A number of people each wrote down one of the first 30 positive integers. Were any of the integers written down by more than one of the people?

这个题目也没太看懂，它的逻辑，希望NN解释一下，谢谢~~
我对着提也很confused~~~‘Were any of the integers written down by more than one of the people?
'是不是应该理解为“任何一个整数都不止被一个人写过”？（于是选E。。。）而非OG上面解释的是 at least onr integer had to be written down by more than one person.？（答案是选A）
求解释：为什么不能按照我的那个理解“任何一个整数都不止被一个人写过”？