Find the least number which must be subtracted from 2037 so that the resulting number is a perfect square.

Find the least number which must be added to 5483 so that the resulting number is a perfect square.

The sum of first four odd natural numbers is :

1. 2³

2. 2⁴

3. 4³

4. 4⁴

24² has n at its unit place, the value of n is:

1. 4

2. 16

3. 576

4. 6