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题目内容
Select 5 numbers from the nine numbers, namely 1~9 (inclusive), to sum up

Quantity A

The number of possible ways that the sum of these five numbers is 22

Quantity B

The number of possible ways that the sum of these five numbers is 28


At most how many integers less than 25 could be the sum of the positive multiple of 4 and the positive multiple of 5?
If x, y, z are positive integers, and x+y+z=7, then how many different solutions are there?
The average of four different integers is 30,if the minimum integer is 27,what is the greatest possible value of the integers?
List L consists of 5 different positive integers. If the average (arithmetic mean) of the integers in the list is 8, what is the greatest possible integer that could appear in list L?
The sum of 10 positive integers is 101, and none of these integers is more than twice the other. What is the largest possible number among these 10 numbers?
The sum of three positive integers is 76, and x is the greatest one. What is the least possible value of x?
m and h are both integers

-8 ≤ h ≤ 10,m+h=-4. What is the least possible value of m*h?
When selecting four different integers from -5 to 4, inclusive, what is the least possible product of these four numbers?
The median of some consecutive odd integers is 0.

Quantity A

The sum of the integers

Quantity B

The sum of the greatest integer and the least integer


If the sum of 11 consecutive integers is 22, then what`s the least of the list of numbers?
The sum of n consecutive integers is 30

Quantity A

n

Quantity B

4


The average of n consecutive integers is 0

Quantity A

The sum of the greatest and least value of the n consecutive integers

Quantity B

The sum of all the n consecutive integers


For positive integers X and Y,whose product is 24,which of following statements MUST be true?

Indicate all such statements.
x Δ y =x if xy is even, x Δ y =y if xy is odd. What is the value of (-57 Δ 72) Δ (-81)?
Integer a is 125 more than integer b. which of the following statement must be true?

Indicate all such statements.
y=$$4x^{2}$$+5x+7 where y is an odd,which of the following is true about x?
Which of the following CANNOT be the value of k+$$k^{2}$$ where k is a positive integer?
m is a positive integer and 5m+9 is divisible by 4, which of the following must be an odd?

Indicate all such items.

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