There are forty elephants and they have forty-fore heads. How can this be possible?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

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

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

Do You See It?

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.

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

I am Huge on Sunday and Saturday.
I am small from Tuesday to Thursday.
I do not exist on Monday and Friday.
Who am I?