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OG18自测章   题数：24
If the units digit of integer n is greater than 2, what is the units digit of n ?(1) The units digit of n is the same as the units digit of n2 .(2) The units digit of n is the same as the units digit of n3 ​.
What is the value of the integer p ?(1) Each of the integers 2, 3, and 5 is a factor of p.(2) Each of the integers 2, 5, and 7 is a factor of p.
If the length of Wanda’s telephone call was rounded up to the nearest whole minute by her telephone company, then Wanda was charged for how many minutes for her telephone call?(1) The total charge for Wanda’s telephone call was $6.50.(2) Wanda was charged $0.50 more for the first minute of the telephone call than for each minute after the first.
What is the perimeter of isosceles triangle MNP ?(1) MN= 16(2) NP= 20
In a survey of retailers, what percent had purchased computers for business purposes?(1) 85 percent of the retailers surveyed who owned their own store had purchased computers for business purposes.(2) 40 percent of the retailers surveyed owned their own store.
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 $10 each did the store sell yesterday?(1) The gift certificates sold by the store yesterday were worth a total of between $1,650 and$1,800.(2) Yesterday the store sold more than 15 gift certificates worth $100 each.
Is the standard deviation of the set of measurements x1 , x2 , x3 , x4 ........ x20 ​ less than 3 ?(1) The variance for the set of measurements is 4.(2) For each measurement, the difference between the mean and that measurement is 2.
Is the range of the integers 6, 3, y, 4, 5, and x greater than 9 ?(1) y > 3 x(2) y > x > 3
is 5x+225 <1 ?(1) 5x<1 (2)
Of the companies surveyed about the skills they required in prospective employees, 20 percent required both computer skills and writing skills. What percent of the companies surveyed required neither computer skills nor writing skills?(1) Of those companies surveyed that required computer skills, half required writing skills.(2) 45 percent of the companies surveyed required writing skills but not computer skills.
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