GRE
The standard deviation of the 3 numbers x, x+1, and x+70
The standard deviation of the 3 numbers x+ 10, x+11, and x+80
The remainder when $$n(n^{2}-1)$$ is divided by 6
1
The standard deviation of the seven numbers $$-c, -b, -a, 0, a, b, c$$
The standard deviation of the seven numbers $$-c^{2}, -b^{2}, -a^{2}, 0, a^{2}, b^{2}, c^{2}$$
The area of region $$S_1$$ minus the area of region $$S_3$$
$$\frac{π}{2}-1$$
The 60th percentile of the values in Q
The 70th percentile of the values in Q
25000 +道题目
236本备考书籍