Can you replace the question mark with the correct number in the below table sequence?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

If your uncle’s sister is not your aunt, what relation is she to you?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

What is the below Rebus indicate?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

What month of the year has 28 days?