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OG19-数学分册 At the opening of a trading day at a certain stock exchange, the price per share of stock K was $8. If the price per share of stock K was $9 at the closing of the day, what was the percent increase in the price per share of stock K for that day?
OG17 OG18 OG19 OG20 OG2022 In each of the last five years, Company K donated p percent of its annual profits to a certain scholarship fund. Did Company K donate more than $10,000 to the scholarship fund last year?(1) Two years ago, Company K had annual profits of $3 million and donated $15,000 to the scholarship fund.(2) Last year, Company K had annual profits of $2.5 million.
190215 $$\frac{10n}{7}$$=k+$$\frac{q}{7}$$,n,q are positive integers smaller than 7. What is the maximum value of k?
191020 n. k are different positive integers, and n+k<8. How many different values are there to find the product of nk?
Magoosh In the xy-coordinate system, points (2, 9) and (-1, 0) lie on line k. If the point (n, 21) lies on line k, what is the value of n?
Magoosh In the xy-coordinate system, line k has slope $$\frac{1}{2}$$ and passes through point (0, 5). Which of the following points cannot lie on line k?
OG18-数学分册 The total cost of an office dinner was shared equally by k of the n employees who attended the dinner. What was the total cost of the dinner?(1)Each of the k employees who shared the cost of the dinner paid $19.(2)If the total cost of the dinner had been shared equally by k + 1 of the n employees who attended the dinner, each of the k + 1 employees would have paid $18.
Magoosh Lisa and Phillip are in a group of J employees. From this group of J employees, K will be selected, at random, to sit in a line of K chairs. There are absolutely no restrictions in either the selection process or the order of seating—both are entirely random. What is the probability that the employee Lisa is seated exactly next to employee Phillip? Statement #1: K = 15Statement #2: K = J
OG19-数学分册 In the xy-plane, lines k and € intersect at the point (1, 1). Is the y-intercept of k greater than the y-intercept of € ? (1) The slope of k is less than the slope of € . (2) The slope of € is positive.
PREP07 Test 2 Is the positive integer j divisible by a greater number of different prime numbers than the positive integer k ?(1) j is divisible by 30. (2) k = 1,000
190310 What is the unit digit number of ?
1: k can be divided by 10.
2: k can be divided by 4.
190603 The three heights of a triangle are M, H, and K. Is the perimeter of this triangle greater than 6?
(1)M>2
(2)K+H>4
Ready4

If is the sum of even integers from to , inclusive and is the number of even integers from to , inclusive, what is ?
Magoosh If line k in the xy-coordinate plane has the equation Ax + By = C, what is the slope of line k ?(1) A = 2B(2) C = 4B
OG19-数学分册 In the sequence $$x_0$$, $$x_1$$, $$x_2$$, ... , $$x_n$$, each term from $$x_1$$ to $$x_k$$ is 3 greater than the previous term, and each term from $$x_k+1$$ to $$x_n$$ is 3 less than the previous term, where n and k are positive integers and k < n. If $$x_0 = x_{n} = 0 $$ and if $$x_{k} = 15$$ , what is the value of n?
Magoosh $$(30^{30}) * (29^{29}) * (28^{28}) * . . . * (3^{3}) * (2^{2}) * (1^{1}) = N$$What is the highest value of K, such that $$\frac{N}{(125^{K})}$$ is an integer?
PREP07 Test 2 A farm used two harvesting machines, H and K, to harvest 100 acres of wheat. Harvesting machine H, working alone at its constant rate, harvested 40 acres of wheat in 8 hours. Then harvesting machine K was brought in, and harvesting machines H and K, working together at their respective constant rates, harvested the remaining acres of wheat in 5 hours. Harvesting machine K harvested how many acres of wheat per hour?
OG12 OG15 For which type of investment, J or K, is the annual rate of return greater?(1)Type J returns $115 per $1,000 invested for any one-year period and type K returns $300 per $2,500 invested for any one-year period.(2)The annual rate of return for an investment of type K is 12 percent.
Ready4

denotes the greatest integer less than or equal to . Is ?

(1)

(2)

Ready4

The sequence is defined such that for all integers :

If is a positive integer, is the sum of the first terms of the sequence greater than ?

(1)

(2)