Which is faster, Heat or Cold ? Explain.

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

Find the value of "?" in the ball picture Riddle below:

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?