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?

Move three sticks of the spiral below to form a square.

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Find the next number in the sequence

5 12 24 36 ?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?

In the image given, you can find several triangles. Can you count them all?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Why 1729 is a magic number? Answer Logically.