后天就要考试了 积攒了一些数学题 问问大家！！

C擦亮眼

87.    9993-!-item-!-187;#058&007019

In the addition table shown above, what is the value of m + n ?

(A) -19
(B)  4
(C)  5
(D)  6
(E)  22
93.    10285-!-item-!-187;#058&007154

In the figure above, a square is inscribed in a circle.  If the area of the square region is 16, what is the area of the circular region?

(A)  2π
(B)  4π
(C)  6π
(D)  12π
(E)  16π
96.    10591-!-item-!-187;#058&007292
According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3 cans of water to make orange juice.  How many 12-ounce cans of the concentrate are required to prepare 200 6-ounce servings of orange juice?
(A)  25
(B)  34
(C)  50
(D)  67
(E)  100
107.    11225-!-item-!-187;#058&007613

In the figure above, equilateral triangle ABC is inscribed in the circle.  If the length of arc ABC is 24, what is the approximate diameter of the circle?

(A) 5
(B) 8
(C) 11
(D) 15
125.    12681-!-item-!-187;#058&008922


The figure shown represents a piece of land that is in the shape of a quarter circle.  If the land is enclosed by a fence, which of the following is closest to the length, in feet, of the fence?

(A) 278
(B) 341
(C) 357
(D) 400
(E) 441
142.    14580-!-item-!-187;#058&010013
The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present.  If the concentration of chemical B is increased by 100 percent, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?

(A) 100% decrease
(B) 50% decrease
(C) 40% decrease
(D) 40% increase
(E) 50% increase
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【答案】D
【思路】
題目意思是說 化學物A的平方與此化學反應速率成正比
化學物B 與此化學反應速率成反比
所以B增加100% 換句話說B變成了兩倍 所以反應速率變成1/2
要讓原本的速率不變 所以A勢必要增加 能讓速度變成兩倍去抵銷那1/2倍
得到算式會是2*1/2=1
A的平方與速率成正比 所以A平方就等於2 A就等於根號2=1.41...

換句話說 增加了40%左右
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154.    16003-!-item-!-187;#058&010661
If n is a positive integer and the product of all the integers from 1 to n, inclusive, is a multiple of 990, what is the least possible value of n ?

(A) 10
(B) 11
(C) 12
(D) 13
(E) 14164.    17177-!-item-!-187;#058&011044
A certain scholarship committee awarded scholarships in the amounts of $1,250, $2,500, and $4,000.  The committee awarded twice as many $2,500 scholarships as $4,000 scholarships, and it awarded three times as many $1,250 scholarships as $2,500 scholarships. If a total of $37,500 was awarded in $1,250 scholarships, how many $4,000 scholarships were awarded?

(A)  5
(B)  6
(C)  9
(D) 10
(E) 15
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177.    18457-!-item-!-187;#058&011601
When a certain tree was first planted, it was 4 feet tall, and the height of the tree increased by a constant amount each year for the next 6 years.  At the end of the 6th year, the tree was 1/5 taller than it was at the end of the 4th year.  By how many feet did the height of the tree increase each year?

(A)  3/10
(B)  2/5
(C)  1/2
(D)  2/3
(E)  6/5

143.    14954-!-item-!-187;#058&010212
In a survey of students, each student selected from a list of 12 songs the 2 songs that the student liked best.  If each song was selected 4 times, how many students were surveyed?

(A) 96
(B) 48
(C) 32
(D) 24
(E) 18

kazemi

can't see the tables and figures...

chasingM7

ya, you better prepare the full question before asking dude..

C擦亮眼

楼上的两位不好意思哈...  我考之前有点小着急就没注意..