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[test2] - The outer dimensions of a closed rectangular cardboard box are 8 centimeters by 10 centimeters by 12 centimeters, and the six sides of the box are uniformly $$\frac{1}{2}$$
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模考带练机经题
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If 12! is a multiple of $$(4!)^{n}$$ and not a multiple of $$(4!)^{n+1}$$, what is the value of n?
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模考带练机经题
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How many different prime factors does 2730 have?
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第一期
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If n is a positive integer, what is the remainder when $$3^{8n+3}+2$$ is divided by 5?
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181215
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f(x)=-2$$(x-5)^{2}$$+3. What is the maximum value of f(x)?
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181215
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$$0.1^{n+1}$$ ≤ 0.00625 ≤ $$0.1^{n}$$.n=?
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181215
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What`s the hundred-digit number of 13467*$$\frac{10^{6}-10^{4}}{10^{5}}$$?
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181215
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How many solutions does the equation $$\frac{x^{2}-1}{x-1}$$=0 have?
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181215
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How many seconds does it take to drive 132 feet at an average speed of 50 miles/h?
(1 mile=5280 feets, 1h=3600s)
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181215
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Someone's home and company are on the same side of a straight road. However, because of the construction of the road, he has to take a detour. Now he goes to the company by walking 3km to the north, 6km to the west and 5km to the north from his home. How many kilometers does this person walk more than usual?
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181215
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Coffee cups were put in two size of boxes. A big box and a small box can hold 15 coffee cups. Two big boxes and four small boxes can hold 40 coffee cups. How many coffee cups can be put in a big box?
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181215
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Choose at least one element from the set {1,4}, {2,7} respectively. How many combinations are there in total?
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181215
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d is a non-zero integer. What is the reminder of a positive integer d340 divided by 8?
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181215
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$$(x+y)^{2}$$=13,$$(x-y)^{2}$$=5, xy=?
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181215
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A rope with uniform thickness of 10cm weighs 500g. How many kilograms does the rope with length of 2m weigh?
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181215
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The budget for someone's meal is $6 plus 5% tax. In fact, he only spent $5.67. How many percents is the actual cost less than the budget?
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190124
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A six-digit number is composed of 54X, Y, and 18. X and Y could be 3,5,8 and X and Y can be equal. How many cases are there in which 8 is a factor of this six-digit number?
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190124
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There is a stack of cards. 9 cards are blue and the rest are red. The probability of taking out two cards randomly that are both blue is 1/7. What`s the number of the red cards?
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190124
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A takes 4 hours to complete a task alone. It takes 3 hours for A and B to finish the task at the same time. How many hours does it take for B to finish the task alone?
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190124
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4 < $$x^{2}$$ -2x +1 < 16,How many integers x satisfy the inequality?
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