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

A wife and her husband were driving in their car on the highway. All of a sudden, they ran out of gas. So the husband said to the wife, 'Now, you stay here. I will go down the highway to the nearest gas station, and it will be about 1 hour. Just listen to the radio and read some books, and remember to lock all the windows and doors. I will leave the keys with you.' So, off the husband went, and the wife first locked ALL the windows and doors. Next, she turned on the radio, and this is what she heard on the news report:
'THERE IS A MURDERER ON THE LOOSE. HE WAS LAST SEEN ON THE HIGHWAY, WEARING ALL BLACK, ABOUT 5 FOOT 11 INCHES. PLEASE, BE AWARE AND CONTACT THE POLICE IMMEDIATELY.' The wife got very scared. She turned off the radio and double-checked the locked doors. Then she saw the murderer, only a couple of feet away from the car. An hour later, the husband returned to his car. Inside the car, his wife was DEAD, she had been murdered. All the windows were still locked, and the doors. No windows were broken, and the car was in PERFECT condition. No scratches or anything, it was the same way as when he left it. How did the murderer kill the wife?

Asked by Neha on 13 Jul 2023


Count the number of lines in the image below ?

Riddles From Picture

Asked by Neha on 03 Feb 2021

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Asked by Neha on 31 Dec 2020


I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

Asked by Neha on 06 Nov 2023

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Asked by Neha on 04 Apr 2024

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

Asked by Neha on 28 Apr 2022


What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Asked by Neha on 12 Jul 2021

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?


Luis Garavito Rebus

Asked by Neha on 11 May 2021

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Asked by Neha on 06 Aug 2023


Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Asked by Neha on 04 Oct 2025

Hot Articles

Amazing Facts

Artificial Intelligence

Artificial Intelligence has crushed all human records in the puzzle game “2048,” achieving a high score of 839,732 and beating the game in only 973 moves without using any undo.