Question

Find the largest number of 2 digits which is a perfect square with very simple method and by the process of prime factorization

Answer 1

Answer:

For a 2 digit number to be a square, the square root will be a 1 digit number.

The greatest 1 digit number is 9. Its square is 9 × 9 = 81

In prime factors - 81 = 9 × 9 = 3 × 3 × 3 × 3