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.

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

That attorney is my brother, testified the accountant.

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

Who is lying?

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

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

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

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C