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.

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

What English word has three consecutive double letters?

A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene.

How did he die?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Spot what is wrong here in below Picture?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

How far can you walk into the woods?