What is black when you buy it, red when you use it, and gray when you throw it away?

A guard is positioned at the one side of the bridge saying ‘A’. His task is to shoot all those who try to leave from ‘A’ to the other side and say ‘B’. He also need to welcome the person who comes from another side ‘B’ to his side ‘A’. The guard comes out of his post every 1 hour and looks down the bridge for any people trying to leave. You are at side ‘A’ and wish to go to another side ‘B’. you also know that it would take 1:45 hr to cross the bridge. How will you cross the bridge?

Count the number of lines in the image below ?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

What does this mean?
N
A
E
L
C

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

What happened when the wheel was invented?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?