You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

In the given picture, you can find a square in the centre and four open squares. Can you form three closed squares by just moving three sticks from their positions respectively?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

What does the below rebus riddle means?

Take one out and scratch my head, I am now black but once was red. What am I?

Can you find the mistake in the below statement?