What happened when the wheel was invented?

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

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

John was piloting a plane behind a car but was never able to overtake it. Why?

Can you count the number of triangles in the given picture?

How many words can a pen with half refill write?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?