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题目内容
The average (arithmetic mean) of integers from 1 to n, inclusive, is 12.

Quantity A

n

Quantity B

24

Quantity A

The average (arithmetic mean) of the positive odd integers less than or equal to 50

Quantity B

The average (arithmetic mean) of the positive even integers less than or equal to 50

Quantity A

The average (arithmetic mean) of the first 99 positive integers

Quantity B

The median of the first 101 positive odd integer
S is the set of integers between 100 and 900, inclusive, that are multiples of 30. What is the median of the integers in S?
S is the average (arithmetic mean) of n consecutive integers, beginning with the integer m. T is the average (arithmetic mean) of n consecutive integers beginning with the integer m+1.

Quantity A

S+1

Quantity B

T
The average (arithmetic mean) of 12 consecutive odd integers is 312.

Quantity A

The least of the 12 consecutive odd integers

Quantity B

301

Quantity A

The median of the consecutive integers from 4 to 88, inclusive

Quantity B

46.5
List A consists of 25 positive integers $$a_1$$, $$a_2$$, $$a_3$$,...,$$a_{25}$$ that are ordered from least to greatest. The median and the mode of the integers in A are both equal to 10. List B consists of 25 positive integers $$b_1$$, $$b_2$$, $$b_3$$,...,$$b_{25}$$ that are ordered from least to greatest. The median and the mode of the integers in B are both equal to 15. List C consists of the 25 sums $$a_i$$ +$$b_i$$, for all integers $$i$$ such that 1 ≤ $$i$$ ≤ 25. The mode of the integers in C is $$m$$.

Quantity A

The median of the integers in C

Quantity B

$$m$$
6.4, 9.6, 8.4, 6.4, 7.1, x, y

The 7 numbers listed above have two modes: 6.4 and 8.4. If the arithmetic mean of the 7 numbers is 7.7, what is the median of the 7 numbers?
Five boxes each contain at least 1 ball. The mode of the numbers of balls in each of the boxes is 3. Which of the following statements must be true?

Indicate all such statements.
The recorded heights, in inches, of 9 people are 58, 62, 62, 62, 63, 70, 71, 74, and 75. Which of the following lists the mean, the median, and the mode of the recorded heights in order, from least to greatest?
The average (arithmetic mean) of the six numbers $$y_1, y_2, y_3, y_4, y_5$$, and $$y_6$$ is $$k$$. The average of the six numbers $$y_1+k, y_2+k, y_3+k, y_4+k, y_5+k$$, and $$y_6+k$$ is $$m$$.

Quantity A

$$k$$

Quantity B

$$m$$
By approximately how many square kilometers did the actual area of January sea ice in 2001 exceed the area predicted by the trend line for 2001?
Based on the trend line, the predicted area of January sea ice for 2007 was approximately how many square kilometers greater than the predicted area for 1997?
In 2008 the area of January sea ice was 34 percent above the mean area. What was the area of January sea ice in 2008?

Give your answer to the nearest million square kilometers.
0 < m < 1 and k=4(9-m)

Quantity A

k

Quantity B

36
S= {3, 6, 9, 12, 15, 18, 21, 24, 27} T= {6, 10, 13, 18. 24, 26, 30}

Quantity A

The number of elements in the intersection of sets S and T

Quantity B

The number of elements in Set T that are not in set S

Quantity A

The number of positive integers less than 1,000 with an odd number of even digits

Quantity B

The number of positive integers less than 1,000 with an odd number of odd digits

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