The need for integers

The relation S is defined on the set of integers Z as xSy if integer x devides integer y. Then

Find the number of integers n for which (n)/(20-n) is the square of an integer.

The dum of two integers is 47. If one of the integers is -24 , find the other.

Write a pair of integers whose sum gives i zero, ii a negative integer, iii an integer smaller than both the integers, iv an integer greater than both the integers, v an integer smaller than only one of the integers.

Write a pair of integers whose difference gives i zero ii a negative integer iii an integer smaller than both the integers, iv an integer greater than both the integers, v an integer greater than only one of the integers.

There are infinitely many integers between any two integers

The product of two positive integers and eight negative integers is a

For some integer q , every odd integer is of the form