GRE
n
24
The average (arithmetic mean) of the positive odd integers less than or equal to 50
The average (arithmetic mean) of the positive even integers less than or equal to 50
The radius of the circle
$$\frac{x+y}{2}$$
y
21
he standard deviation of the numbers in set S
The standard deviation of the numbers in set T
The units digit of $$N^4$$
3
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211本备考书籍