If p is a positive integer and is greater than 3. How many prim...

Given any positive integer, show that two must exist whose sum or difference si divisible by 10.

When you add a positive integer and a negative integer, you sometimes get a negative result and some...

if n is an odd positive integer, then prove that n^2 -1 is divisible by 8

For positive integer x, let f(x) be the function which returns the number of distinct positive facto...

If x and y are positive integers, and square root = y + 3, then y^2 = ?

1. If b is a positive integer than 200, then how many integer pairs (a,b) satisfy the equation a/b=...

35. If b is a positive integer less than 400 and more than 100, then how many integer pairs (a,b) sa...

Let n be a positive integer. Let k be a positive integer. (a) Using a counting argument, sh...

When a positive integer x is divided by 5 the remainder is 1. When x is divided by 8, the remainder...

What is the positive integer that makes the question true? x2 = 144

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