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题目内容
The median of 7 consecutive odd numbers in a certain list is 39. If the each of the numbers in the list were multiplied by -3, what would be the value of the least of the resulting 7 numbers?

Quantity A

Among all the consecutive integers from 1 to 50, the difference between the sum of all even numbers and the sum of all odd numbers

Quantity B

25
Which of the following CANNOT be the sum of six consecutive odd integers?
a and b are positive integers and ab=24

Quantity A

$$a^{2}$$b

Quantity B

192
A positive integer n is a factor of 200 but not a factor of 100. Also, 5 is a factor of n but 25 is not a factor of n. What is the value of n?
k is an odd integer greater than 100,d is a positive factor of k

Quantity A

d

Quantity B

$$\frac{k}{2}$$
If $$\frac{12!}{(2^{x})(3^{y})}$$ is an integer,what is the greatest possible value of x+y?
x is an integer greater than 3

Quantity A

The number of the positive even divisors of 2x

Quantity B

The number of the positive odd divisors of 3x
List A consists of 7 numbers with a median of 51,and List B consists of 9 numbers with a median of 53.

Quantity A

The median when List A and B are combined

Quantity B

52
If n is a positive integer,what is the total number of n so that 72/n is an integer as well?
$$p$$ and $$r$$ are different prime numbers greater than 3

Quantity A

The number of positive factors of $$pr^{2}$$

Quantity B

The number of positive factors of $$(p+3)(r+3)$$
n, s and t are all positive integers

If n is a multiple of 7 and n=$$s^{2}$$t，which of the following must be a multiple of 49？
How many integers are multiples of 2 or 3 from 1 to 603, inclusive? 
S is the set of all integers x such that 100 < x < 200.

Quantity A

The number of integers in S that are multiples of 5, but NOT multiples of 4

Quantity B

15
Set Q consists the integers from 1 to 1,000 that are divisible by 3. How many integers in Q are not divisible by 5?
If an integer is randomly selected from integers between 100 and 1000 inclusive, what's the probability that the number is divisible by 7?

Give your answer as a fraction.
The square of which of the following number is 4 more than a multiple of 5?

Indicate all such values.
What's the number of n that are either multiples of 5 or multiples of 7 from 1 to 1000, inclusive?
How many integers from 100 to 200,inclusive,are both odd number and multiple of 3?

Quantity A

The sum of the least and the greatest three-digit integer that can be divisible by 3

Quantity B

1100

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