All basic of integer

The sum of all values of integers n for which (n^2-9)/(n-1) is also an integer is

Find all the integers lying between the pair of integers given below. Also, find the smallest and the largest of these numbers : a. -21 and -27 b. -36 and -42

The negation of the statement All prime integers are either even or odd " is

Find the sum of all integers between 50 and 500 which are divisible by 7.

Find the sum of all integers between 84 and 719, which are multiples of 5.

Find the sum of all integers between 100 and 550, which are divisible by 9.

Prove that 2^n > n for all positive integers n.

Find the sum of all integers between 0 and 500 which are divisible by 7.

Find the sum of all integers between 84 and 719, which are multiples of 5.

Find the sum of all integers between 100 and 550, which are divisible by 9.