John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

Take away the whole and some still remain. What is it?

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

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

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.

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.