What work can one never finish?

What has lots of eyes, but can’t see?

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 following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

What 5-letter word typed in all capital letters can be read the same upside down?

What you cannot hold but it is yours?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

Can you divide the below-given shape into four equal and identical pieces?