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分数与小数   题数:20
What is the hundredths digit of the decimal z ? (1) The tenths digit of 100z is 2. (2) The units digit of 1,000z is 2.
If n is an integer between 3 and 9, what is the value of n ?(1) On the number line, the distance from 3 to n is 23 ​ of the distance from 3 to 9.(2) On the number line, n is 10 units to the right of -3
Is the sum of p2 and q2 greater than 1?(1) p is greater than 1/2.(2) q is greater than 1/2.
Any decimal that has only a finite number of nonzero digits is a terminating decimal. For example, 24, 0.82, and 5.096 are three terminating decimals. If r and s are positive integers and the ratio r/s is expressed as a decimal, is r/s a terminating decimal?(1) 90 < r < 100(2) s = 4
When 200 gallons of oil were removed from a tank, the volume of oil left in the tank was 3/7 of the tank’s capacity. What was the tank’s capacity?(1)Before the 200 gallons were removed, the volume of oil in the tank was 1/2 of the tank’s capacity.(2)After the 200 gallons were removed, the volume of oil left in the tank was 1,600 gallons less than the tank’s capacity.
【OG20-P273-235题】How many basic units of currency X are equivalent to 250 basic units of currency Y?(1)100 basic units of currency X are equivalent to 625 basic units of currency Y.(2)2,000 basic units of currency X are equivalent to 12, 500 basic units of currency Y
The product of the units digit, the tens digit, and the hundreds digit of the positive integer m is 96. What is the units digit of m?(1) m is odd.(2) The hundreds digit of m is 8.
What is the probability that a student randomly selected from a class of 60 students will be a male who has brown hair?(1) One-half of the students have brown hair.(2) One-third of the students are males.
In the decimal representation of x, where 0 < x < 1, is the tenths digit of x nonzero?(1) 16x is an integer.(2) 8x is an integer.
If n is an integer, is 10^n ≤ 0.001 ?(1) n ≤ -2(2) n > -5
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