GWD1 数学难题请教

luyi1988 · 发表于 2010-6-30 21:53:45

Q2:
A certain roller coaster has 3 cars, and a passenger is equally likely to ride in any 1 of the 3 cars each time that passenger rides the roller coaster. If a certain passenger is to ride the roller coaster 3 times, what is the probability that the passenger will ride in each of the 3 cars?

0 1/9 2/9 1/3 1

Q10:
A set of numbers has the property that for any number t in the set, t + 2 is in the set. If –1 is in the set, which of the following must also be in the set?

-3
1
5

A.   I only
B.   II only
C.   I and II only
D.   II and III only
E.   I, II, and III

Q14:
If 1050 – 74 is written as an integer in base 10 notation, what is the sum of the digits in that integer?

424
433
440
449
467

Q17:
In Town X, 64 percent of the population are employed, and 48 percent of the population are employed males. What percent of the employed people in Town X are females?

16%
25%
32%
40%
52%

milkis · 发表于 2010-6-30 22:33:35

http://forum.chasedream.com/GMAT_Math/thread-184062-1-1.html?extparms=Action%3dvalued%26page%3d50

看这里吧，有分析的~TT30套都有

luyi1988 · 发表于 2010-7-5 19:57:58

谢了

GWD1 数学难题请教

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