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下面为大家整理了新GRE数学模拟题，备考过程中，GRE模拟题的练习是必不可少的一个环节，合理的安排复习时间，有效的运用GRE模拟题练习，可以帮助考生在新GRE考试中拿到高分。 下面是新GRE数学模拟练习题，参加GRE考试的考生可以好好的练习一下这些GRE模拟题。 1. 从1,2,3,4,5,6,7,8,9中选出三个数字组成一个三位数,这个三位数的digits中有两个相同,另一个digit与其它两个都不同,问共有多少个这样的三位数? 72 144 180 216 54 2. 符合 X^2+Y^2=100的整数解共有多少对? 3. A box contains 100 balls, numbered from 1 to 100. If three balls are selected at random and with replacement from the box,what is the probability that the sum of the three numbers on the balls selected from the box will be odd? 1/4 3/8 1/2 5/8 3/4 4. Right triangle PQR is to be constructed in the xy-plane so that the right angle is at P and PR is parrallel to the x-axis. The x-and y-coordinates of P,Q,and Rare to be integers that satisfy the inequalities -4=5,6=16,how many different triangles with these properties could be constructed? | 
