Prove that twice of ten is the same as twice of eleven.

Find the 8 in the below-given Image.

What does this mean?

CCCCCCC

What does this Rebus Picture means ?

What do you see in the given picture?

How can you leave a room with two legs and return with six legs?

What 5-letter word typed in all capital letters can be read the same upside down?

Can you count the number of quadrilaterals in the picture below?

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

I have two sand hourglasses:
1. A 7 minute one and
2. An 11-minute one.

Using just these 2 sand hourglasses, how can I measure time as 15 minutes?