Fifty-year-old Scientist

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.




Similar Riddles

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

Asked by Neha on 14 Jun 2024


Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

Asked by Neha on 07 Oct 2024

What time is it when an elephant sits on a fence?

Asked by Neha on 10 Jul 2025


A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Asked by Neha on 03 Jul 2023

If you had an infinite supply of water and 5-quart and 3-quart pails, how would you measure exactly 4 quarts? What is the least number of steps you need?

Asked by Neha on 09 Apr 2026

If we tie a Sheep to one peg, a circled grass is been eaten by the Sheep. If we tie the Sheep to two pegs with a circle on its neck, then an eclipse is eaten out of the grass by the Sheep. If we want an eclipse then we put two pegs and then put a rope in between them and the other end of the rope is tied up on the Sheep's neck.

How should we tie the peg and the Sheep so that a square is eaten out from the garden grass? We only have one Sheep rope and the peg and the rings.

Asked by Neha on 18 Oct 2025


Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Asked by Neha on 17 May 2021

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

Asked by Neha on 20 Jul 2023

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Asked by Neha on 29 Jan 2021


On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

Asked by Neha on 09 Oct 2024

Hot Articles

Amazing Facts

Out of the Box

The phrase “thinking outside the box” was popularised from the solution to a topographical puzzle involving 9 dots in a box shape.