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.

Imagine you are in a room with no windows or doors. How will you get out?

A father's child, a mother's child, yet no one's son.

Who am I?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

In a town, there are over 100 flats.
Flat-1 is named first flat.
Flat-2 is named second flat.
Flat-3 is named third flat.

A visitors 'Victor' decides to walk through all the flats, he finds all the flats except flat-62.
Victor later founds that the local of the town have given it another name.

What is the name of the Flat?

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

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Which alphabet letter is a question?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

The world's largest Thanksgiving turkey was on display at a fair. Everyone was admiring it when suddenly a woman ran up and shot the turkey and left. Everyone knew her yet nobody made any attempts to stop or report her. Why?