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181215	Two drivers, A and B, drive at the same direction and their uniform speed on the same road. At a certain time, the distance between A and B is 10miles. How long does it take B to catch up with A from that time? 1: A is 10mph slower than the highest speed while B is 10mph faster than the highest speed 2: the driving speed of B is 65mph.
181215	There are two kinds of coins in the piggy bank, 30 cents and 24 cents. How many coins are there of each kind? Condition 1: All coins add up to 102 cents. Condition 2: There are 4 coins in the piggy bank.
181215	$$0.1^{n+1}$$ ≤ 0.00625 ≤ $$0.1^{n}$$.n=?
181215	Does the equation 2$$x^{2}$$+bx+8=0 have real solutions? 1: b < 0 2: lbl > 5
181215	Which of the following option makes $$\frac{7x}{\sqrt{-2x^{2}+8}}$$ irrational number?
181215	($$\frac{1}{2} - \frac{1}{3}$$)+($$\frac{1}{3} - \frac{1}{4}$$)+($$\frac{1}{4} - \frac{1}{5}$$)=?
181215	\|x+y\|=\|x-y\|. Is x-y > 0? 1:x+y < 0 2:x+y > x-y
181215	The average of the six unknown integers is 42. Is the median of these six numbers less than 42? 1: All of the numbers are greater than 41. 2: The maximum number is 47.
181215	The sales company spent c dollars on n computers and sold them all at p dollars per computer. The company later purchased 100 computers at the same unit price and sold them all at the price of y dollars per computer. What's the profit of this company from selling these two batches of computers?
181215	ABCDEF is regular hexagon. ∠AOG = ？
181215	$$S_1$$=1,$$S_2$$=2,$$S_3$$=$$2^{1}$$=2,$$S_n$$={$$S_{n-1}$$}^{$$S_{n-1}$$}.$$\frac{S_6}{S_5}$$=?
181215	What`s the hundred-digit number of 13467*$$\frac{10^{6}-10^{4}}{10^{5}}$$?
181215	w=3x, z=3x-y. Is w>z? 1:z-y=9 2:x=3
181215	Six geometric puzzles are arranged in a row, including three identical squares, two identical circles and one triangle. How many different arrangements are there?
181215	How many solutions does the equation $$\frac{x^{2}-1}{x-1}$$=0 have?
181215	Is x a factor of 24? 1: 3x is a factor of 48. 2: 5x is a factor of 60.
181215 KMFPS	If n is a positive integer, what could the unit digit of n(n+1)(n+2)(n+3)(n+4)?
181215	x,y are real numbers. y is more than x, and the extra part is 22% of y. $$\frac{x}{y}$$=?
181215	The distance between a planet and the Earth is km, and the distance between the Moon and the Earth is km. On a map, the distance between the Moon and the Earth is 1cm, so how many kilometers is the distance between the planet and the Earth approximate(on the map)?
181215	If $$\frac{1}{n(n+1)}$$ - $$\frac{1}{(n+1)(n+2)}$$ = $$\frac{2}{n(n+1)(n+2)}$$ , so $$\frac{29900}{345}$$+$$\frac{29900}{456}$$+......+$$\frac{29900}{9899*100}$$=?