The LCM and HCF of two rational numbers are equal, then the numbers must be

If n is a natural number, then 9²ⁿ – 4²ⁿ is always divisible by

If n is any natural number, then 6ⁿ – 5ⁿ always ends with

If the sum of LCM and HCF of two numbers is 1260 and their LCM is 900 more than their HCF, then the product of two numbers is

The remainder when the square of any prime number greater than 3 is divided by 6, is