81 x 9 = 801. What must you do to make the this equation true?

Solve the rebus riddle in the picture below.

What goes through cities and fields, but never moves?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

Four children having five rocks each were playing a game in which they had to throw the rock at a particular solid area in the water. Child 1- Succeeded in throwing three rocks at a solid area but one of the rocks sunk. Child 3 - His aim was so bad that all rocks got sunk. Child 4- He was awesome and none of the rocks got sunk. Child 2 - Was the winner but was struck by a rock in the head and died. Who killed Child 2?

There is a five-letter word which has 3 consonants(all are same) and 2 different vowels.
Also, something wrong is associated with the word.

Can you name it?

Replace the question mark with the correct number.

Why Aeroplane windows are round?

You bought me for dinner but never eat me. What am I?

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