How can one talk without saying a single word?

Why do we preferably have round manhole covers and not square ones?

Can you replace the question mark with the correct number?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

Can it be possible to build a house that has all its four walls facing towards the South?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

A police officer was passing by when he saw a guy hiding. He walked up to him and genially asked, "What is your name?"

"Shut up!" the boy responded.

"Where are your manners?" asked the outraged police officer.

"Up that tree," said the boy discourteously, directing to a neighbouring tree.

You're looking for trouble, aren't you?" said the police officer.

"No, trouble is looking for me!" the boy answered solemnly.

Why is the boy behaving like this?

What does it mean?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?