It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

How many times can you subtract the number two from the number fifty?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Can you move 2 matchsticks to form four equal sized squares.

Why do you find that most of the buildings are deprived of the 13th floor?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H