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

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

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

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

A B C D E F G H

These are the letters given to you. Now you have to find out the letter that comes two to the right of the letter which is immediately to the left of the letter that comes three to the right of the letter that comes midway between the letter two to the left of the letter C and the letter immediately to the right of the letter F.

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?