GRE
The sum of the integers
The sum of the greatest integer and the least integer
The area of sector ABD with C at the center
The area of ACE
$$(-1)^{f(4m+1)}$$
$$(-1)^{f(4m+2)}$$
The number of unique prime factors of 27
The number of unique prime factors of 12
($$\sqrt{x}$$)($$\sqrt{y}$$)
$$\sqrt{x+y}$$
25000 +道题目
236本备考书籍