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190321
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The sides of the square ABCD and EFGH are 4 and 2, respectively. What is the perimeter of the four right triangles?
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300难题
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If s is an integer, is 24 a divisor of s ?
1.Each of the numbers 3 and 8 is a divisor of s.
2.Each of the numbers 4 and 6 is a divisor of s.
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OG17
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If the units digit of the three-digit positive integer k is nonzero, what is the tens digit of k?(1)The tens digit of k + 9 is 3.(2)The tens digit of k + 4 is 2.
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 In the figure shown, what is the area of the circular region with center O and diameter BC?(1)$$\frac {BC}{AB}=\frac3 4$$(2)BD = 25
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PREP07 Test 1
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What is the total value of Company H’s stock?(1) Investor P owns 1/4 of the shares of Company H’s total stock.(2) The total value of Investor Q’s shares of Company H’s stock is $16,000.
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 $$\Delta BAC = \Delta ACD$$,and the length of AC is 4. What is the area of the quadrilateral ABCD above?1. AB = 2 and $$BC = 2\sqrt3$$2. $$x°= 60$$
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PREP07 Test 1
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If the terms of a sequence are$$t_1, t_2, t_3, . . . , t_n$$, what is the value of n ? (1) The sum of the n terms is 3,124. (2) The average (arithmetic mean) of the n terms is 4.
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PREP07 Test 2
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Set S consists of 20 different positive integers. How many of the integers in S are odd?(1) 10 of the integers in S are even. (2) 10 of the integers in S are multiples of 4.
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PREP07 Test 2
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In 1999 Company X's gross profit was what percent of its revenue?(1) In 1999 Company X’s gross profit was 1/3 of its expenses.(2) In 1999 Company X’s expenses were 3/4 of its revenue.
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Magoosh
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In a certain daycare, are there more boys than girls?(1) The number of girls is less than 3 times the number of boys.(2) The number of boys is less than 3/4 the number of girls.
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OG18-定量推理
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If a and b are positive integers, what is the value of the product ab?(1) The least common multiple of a and b is 48.(2) The greatest common factor of a and b is 4.
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OG18-定量推理
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 In pentagon PQRST, PQ = 3, QR = 2, RS = 4 , and ST = 5. Which iof the lengths 5, 10, and 15 could be the value of PT?
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If the positive integer x is a multiple of 4 and the positive integer y is a multiple of 6, then xy must be a multiple of which of the following?I.8II.12III. 18
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OG19-定量推理
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If a and b are positive integers, what is the value of the product ab?
(1) The least common multiple of a and b is 48.
(2) The greatest common factor of a and b is 4.
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OG17 OG18 OG19 OG20 OG2022
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The sum of 4 different odd integers is 64. What is the value of the greatest of these integers?(1) The integers are consecutive odd numbers.(2) Of these integers, the greatest is 6 more than the least.
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OG19-数学分册
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In pentagon PQRST, $$PQ = 3$$, $$QR= 2$$, $$RS= 4$$, and $$ST= 5$$. Which of the lengths 5, 10, and 15 could be the value of PT ?
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GWD PREP08 Test 2
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Which of the following most accurately states the main point of the passage?
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OG12 OG15
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Last year the rate of inflation was 1.2 percent, but during the current year it has been 4 percent. We can conclude that inflation is on an upward trend and the rate will be still higher next year.Which of the following, if true, most seriously weakens the conclusion above?
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Ready4
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If  is an integer greater than zero, then (a+3) "a(a+1)(a+3)") is
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Ready4
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If is an integer greater than zero, then is
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