GRE
The number of different positive 4-digit integers in which two of the digits are equal to 5 and the other two digits are equal to 7
6
The acreage of Hopetown as a percent of the entire acreage of Lewis County
18%
d
s
$$89!-88!$$
$$(87!)(88)^{2}$$
$$Y_6$$
$$(25^{5})Y_{16}$$
The x -coordinate of the vertex at the right angle of the triangle
The y -coordinate of the vertex at the right angle of the triangle
x+y+z
360
The median of Ann, Bob, and Celia's earnings
The average(arithmetic mean) of Ann, Bob, and Celia 's earnings
3x+4y
8
The percent increase from 1998 to 2000 in the yearly expenses to run the business
5%
25000 +道题目
236本备考书籍