| 题号 |
题目内容 |
平均正确率 |
操作 |
DS-d11xsk |
What is the value of [math]x^2[/math] ?[br/](1)[math]5 ＜ x^2 ＜ 10[/math][br/](2)x is an integer. |
89% |
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PS-e52yek |
A shipment of 8 television sets contains 2 black-and-white sets and 6color sets. If 2 television sets are to be chosen at random from this shipment, what is the probability that at least 1 of the 2... |
85% |
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DS-ff1v1k |
If [math]x ≠ 0[/math], is [math]x^2/|x| ＜ 1[/math]?[br/](1)x ＜ 1[br/](2)x ＞ -1 |
74% |
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PS-5d2h0k |
In a certain calculus class, the ratio of the number of mathematics majors to the number of students who are not mathematics majors is 2 to 5.if 2 more mathematics majors were to enter the class th... |
92% |
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DS-df2tlk |
Linda purchased 3 books at a book fair. What was the median price of the 3 books?[br/](1) The average (arithmetic mean) price of the 3 books was $1.5[br/](2) The price of one of the 3 books was $1.5 |
87% |
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DS-9b1xkk |
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 assign each of the n students to one of the m classrooms so ... |
47% |
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DS-791vok |
For a certain play performance, adults’ tickets were sold for $12 each and children’s tickets were sold for $8 each. How many children’s tickets were sold for the performance?[... |
92% |
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PS-1820ok |
The operation Δ is defined for all nonzero x and y by [math]x Δ y = x + x/y[/math]. If a ＞ o, then 1 Δ (1 Δ a) = |
92% |
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DS-e42qzk |
If b, c, and d are constants and [math]x^2 + bx + c = (x + d)^2[/math] for all values of x, what is the value of c?[br/](1) d = 3[br/](2) b = 6
|
58% |
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PS-462j6k |
[img]PS1239.jpg[/img][br/]In the figure above, the point on segment PQ that is twice as far from P as from Q is |
74% |
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DS-cc30wk |
If xy = -18, is x less than y?[br/](1)x＜0[br/](2)y＜10
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94% |
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PS-7931kk |
The number of years of service of the eight employees in a production department are 15, 10, 9, 17, 6, 4, 14, and 16. What is the range in the number of years of service of the eight employees? |
73% |
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DS-c037gk |
What is the value of w + q ?[br/](1) 3w = 3-3q[br/](2) 5w + 5q = 5
|
93% |
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DS-ed30hk |
If u, v, and w are integers, is u ＞ 0 ?[br/](1) [math]u = v^2 + 1[/math][br/](2) [math]u = w^4 + 1[/math]
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95% |
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DS-d92v0k |
If n is an integer between 10 and 99, is n ＜ 80 ?[br/](1) The sum of the two digits of n is a prime number.[br/](2) Each of the two digits of n is a prime number. |
82% |
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PS-a22enk |
If x and y are different prime numbers, each greater than 2, which of the following must betrue?[br/]I [math]x+y!=91[/math][br/]II x - y is an even integer.[br/]III [math]x/y[/math]is not an integer. |
68% |
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DS-351y3k |
If a and b are integers, is b even?[br/](1)3a + 4b is even.[br/](2)3a + 5b is even. |
75% |
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DS-6a282k |
Is2x- 3y ＜ [math]x^2[/math]?[br/](1)2x-3y=-2[br/](2)x＞2 and y＞0 |
56% |
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PS-5f3qtk |
Which of the following is NOT equivalent to [math]49(a^2) = 9(b^2) - 4[/math]? |
93% |
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PS-482cpk |
If 4 is one solution of the equation [math]x^2[/math] + 3x + k = 10, where k is a constant, what is the other solution? |
94% |
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PS-a32e6k |
If Sam were twice as old as he is, he would be 40 years older than Jim. If Jim is 10 years younger than Sam, how old is Sam? |
85% |
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PS-782fuk |
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 would be the lowest po... |
82% |
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DS-f037bk |
The only gift certificates that a certain store sold yesterday were worth either $100 each or $10 each. If the store sold a total of 20 gift certificates yesterday, how many gift certificates worth... |
58% |
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PS-5e2d8k |
Fermat primes are prime numbers that can be written in the form [math]2^k + 1[/math], where k is an integer and a power of 2. Which of the following is NOT a Fermat prime |
93% |
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PS-a42wmk |
[math]（1/(4-sqrt(15))）^2=[/math] |
90% |
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PS-ac238k |
Which of the following is equal to [math](2^12-2^6)/(2^6-2^3)[/math]? |
86% |
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DS-782v3k |
If x ≠ 0, what is the value of [math](|x|)/(x)[/math]?[br/](1) x ＞ 0[br/](2) x = 5 |
91% |
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DS-eb2tdk |
Is [math](X+Y)^3[/math] an even integer?[br/](1) X and Y are integers.[br/](2) XY=9
|
80% |
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PS-3224ck |
If the volume of a small container is 14,520 cubic millimeters, what is the volume of the container in cubic centimeters? (1 millimeter = 0.1 centimeter) |
89% |
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PS-4936rk |
Of the three-digit integers greater than 700, how many have two digits that are equal to each other and the remaining digit different from the other two? |
63% |
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DS-9f1vrk |
What is the value of [math](3^(-(x + y))) /( 3^(-(x - y)))[/math]?[br/](1)x = 2[br/](2)y = 3 |
76% |
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DS-7137jk |
In the xy-plane, if line k has negative slope and passes through the point (-5,r), is the x-intercept of line k positive?[br/](1) The slope of line k is -5.[br/](2) r＞0
|
62% |
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PS-f52g0k |
If x + 5y = 16 and x = - 3y, then y = |
96% |
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DS-bd27ek |
A certain salesperson's weekly salary is equal to a fixed base salary plus a commission that is directly proportional to the number of items sold during the week. If 50 items are sold this week, wh... |
91% |
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PS-8e2jsk |
At a certain instant in time, the number of cars, N, traveling on a portion of a certain highway can be estimated by the formula[br/]N=[math]20Ld/(600+s^2)[/math][br/]where L is the number of lanes... |
87% |
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DS-bb2wxk |
If f is the function defined by f(x) = 2x for x ≥ 0 and [math]f(x) = x^2[/math] for x ＜ 0, what is the value of f(c) ?[br/](1) |c|= 2[br/](2) c ＜ 0 |
67% |
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DS-9437sk |
If p is the perimeter of rectangle Q, what is the value of p ?[br/](1) Each diagonal of rectangle Q has length 10.[br/](2) The area of rectangle Q is 48.
|
82% |
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TN模考试题13
