Can you convert the number zero(0) into a positive number using just one mathematical operator ?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Suppose that you are trapped on the surface of a frozen lake. The surface is so smooth and ideal that there is no friction at all. You cant make any grip on the ice and no wind is blowing to help you out. You have just a mobile phone with you which has got no reception disabling you to call for help.

How will you plan your escape before you freeze to death on the frozen lake?

What has many teeth, but cannot bite?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

Can you find the company name in the pictogram below?

People make me, save me, change me, raise me. What am I?

The more it dries, the wetter it becomes. Can you tell what it is?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?