How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Find the number of squares in the below-given picture.

A thief is convicted in Mexico. He gets the death penalty. The judge allows him to say the last sentence to determine how the penalty will be carried out. If the thief lies, he will be hanged, if he speaks the truth he will be beheaded. The thief tells the last sentence and to everybody's surprise some minutes later he is set free because the judge cannot determine his penalty. What did the thief say?

What is the longest word in the dictionary?

What runs around the whole yard without moving?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

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

What Time Should the last watch show in the below figure?