The rectangle ABCD is divided into 4 regions whose perimeters are indicated in the figure below,where X,Y,Z Are Distinct positive integers and X>Y .It is known that Z=\(\frac{X+Y}{3}\)and W<6.Find X

The rectangle ABCD is divided into 4 regions whose perimeters are indicated in the figure below,where  X,Y,Z are distinct positive integers and X>Y .It is known that Z=\(\frac{Z+Y}{3}\)and W<6.Find X

1.Find the greatest negative integer value for n so that:

n⁴ - 25n² - 70n - 49 

2.Toán tiếng anh: If the length of a leg of a right angle is 11 and the lengths of the other two side are both positive integers, then the perimeter of a triangle is.............

The mean, median, and unique mode of the positive integers 3,4,5,6,7 and x are all equal. What is the value of x ?

the sum A of 191 consecutive positive integers is a perfect square . Find the largest of those 191 positive integers so that A has the smallest value  

There are n different positive integers, each one not greater than 2020, with the property that the sum of any three of them is divisible by 39. Find the greatest possible value of n?

Help me please !!

Find the value of n, if the sum of even positive integers between n² - n + 1 and n² + n + 1 is a number between 2500 and 3000

The area of a rectangle is 80. The width and length are integers. Find the smallest value of the perimeter. 

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Câu 9:
Three different positive integers and are such that .
What is the value of ?
Answer:
Câu 10:
Of the numbers 1,2,…,1000, how many numbers are divisible by neither 6 nor 9?
Answer: