Odd Squares as Sum of Consecutive Natural Numbers

Q. Square of odd numbers can be expressed as:

1. $\frac{n^2-1}{2}+\frac{n^2+1}{2}$
2. $\frac{n^2-3}{2}+\frac{n^2+3}{2}$
3. $n^2-1+n^2+1$
4. $n^2+1+n^2+1$

Q. The sum of first $n$ consecutive odd natural numbers = $n^2$.

1. False
2. True

Q. The square of an odd number is equal to the sum of two consecutive positive numbers.

1. False
2. True