Adding Triangular Numbers

Q. Express 144 as the sum of odd natural numbers.

Q.

Which of the following are not triangular numbers?

1. 1

2. 3

3. 4

4. 6

Q.

How can 1 be a triangular number. I know that 3 can be a triangular but how can 1 be triangular number

Q.

Difference of 2 consecutive square numbers is always _____.

Q. We get sqaure numbers by adding triangular numbers.

1. True
2. False

Q. Which of the following numbers cannot be the repeated digit sum of a perfect square?

1. 1
2. 4
3. 6
4. 9

Q.

Find the value of
(1 + 3 + 5 + 7 + 9 + 11 + 13 + 15).

1. 64

2. 49

3. 36

4. 25