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Ready4	List A: 4, 7, 9, 14 List B: $m$ , 2, 3, 9, 14 If the median of the numbers in list A above is equal to twice the median of the numbers in list B above, what is the value of $m$ ?
Ready4	A rectangle measuring 6 inches by 7 inches is centered inside a larger rectangle such that the perimeters of the two rectangles are separated by a uniform distance of x inches. If the difference between the areas of the two rectangles is 168 square inches, what is x?
Ready4	The average (arithmetic mean) of a set of n numbers is 75. If adding the number 160 in the set raises the average to 80, what is the value of n?
Ready4	If $x=103^{103}+3^{95}$ , what is the units digit of $x$ ?
Ready4	For which of the following values of $k$ is $\tfrac{k+20}{k}$ NOT an integer?
Ready4	At a wedding reception, each of 11 guests brought a different individual as a date. If 5 people leave the reception early, what is the greatest possible number of guests remaining with their original dates?
Ready4	If $\frac{4 - 2 y}{2 + y} = y$ , what is the value of $y^{2} + 4 y + 4$ ?
Ready4	A certain tailor shop employs 10 workers who can normally complete an industrial order in 112 days; however, the shop is prone to power outages, and each outage results in the loss of a full day of work. After 61 days working on a particular industrial order, the shop had had 5 power outages. At the beginning of the 62^nd day of work, in order to make up for the outages, the management hired 4 new workers who work at the same pace as the other employees. In the end, the order took 105 days to complete. How many power outages did the tailor shop have after it brought on the new workers?
Ready4	In the figure above, $O$ is the center of the circle and the measure of $\angle XOY$ is $72\degree$ . If the circumference of the circle is $16$ millimeters, what is the length, in millimeters, of arc $XY$ ?
	At a monthly meeting, $$\frac2 5$$ of the attendees were males and $$\frac7 8$$ of the male attendees arrived on time. If $$\frac9 {10}$$ of the female attendees arrived on time, what fraction of the attendees at the monthly meeting did not arrive on time?
排列组合	From a group of 3 boys and 3 girls, 4 children are to be randomly selected. What is the probability that equal numbers of boys and girls will be selected?
OG12 OG15 OG16	If O is the center of the circle above, what fraction of the circular region is shaded?
应用题	A total of 30 percent of the geese included in a certain migration study were male. If some of the geese migrated during the study and 20 percent of the migrating geese were male, what was the ratio of the migration rate for the male geese to the migration rate for the female geese?[Migration rate for geese of a certain sex = (number of geese of that sex migrating) / (total number of geese of that sex)]
OG12	If $$\frac{1}{2}$$ of the air in a tank is removed with each stroke of a vacuum pump, what fraction of the original amount of air has been removed after 4 strokes?
PREP07 Test 1	If x is a negative integer, which of the following expressions has the LEAST value?
	Three types of aircraft fly three different routes which lengths are related as 1:3:5. The ratio of the amount of fuel burnt over these routes in the same respective order is 5:3:1. What are the ratios of their respective fuel consumption in units of distance per one unit of fuel burnt?
PREP07 Test 2	240, 120, 60, 30, . . . In the sequence above, each term after the first is ½ of the preceding term. What is the least term of the sequence that is greater than 1 ?
PREP07 Test 2	The figure shown represents a board with four rows of pegs, and at the bottom of the board are four cells numbered 1 to 4. Whenever the ball shown passes through the opening between two adjacent pegs in the same row, it will hit the peg directly beneath the opening. The ball then has probability 1/2 of passing through the opening immediately to the left of that peg and probability 1/2 of passing through the opening immediately to the right. What is the probability that when the ball passes through the first two pegs at the top it will end up in cell 2 ?
300难题	The table above shows the number of residents in each of two age groups who support the use of each type of funding for a city initiative. What is the probability that a person randomly selected from among the 250 residents polled is younger than 40, or supports a type of funding that includes a tax, or both?
OG21 OG2022	Carol purchased one basket of fruit consisting of 4 apples and 2 oranges and another basket of fruit consisting of 3 apples and 5 oranges. Carol is to select one piece of fruit at random from each of the two baskets. What is the probability that one of the two pieces of fruit selected will be an apple and the other will be an orange?