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?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

On a beautiful Sunday morning, You ordered a hot tea to your hotel room and suddenly you remember an important thing that needed to be done right now will take around 3 minutes to complete.
Like most people you like your tea to be hot while drinking so, when should you pour cream in the tea?
1. straight away
2. Just people, you drink the team
3. Its does not matter

The more it dries, the wetter it becomes. Can you tell what it is?

What is always in front of you but can’t be seen?

You need to move three matchsticks to form three squares. Can you do it?

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.

I always drive my customer away.

Who am I?