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.

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

What is full of holes but still holds water?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What does this below rebus puzzle mean?

who is silent in the parliament?

You need to arrange three 7 and mathematical symbols to form number 1?

our enemy challenges you to play Russian Roulette with a 6-cylinder pistol (meaning it has room for 6 bullets). He puts 2 bullets into the gun in consecutive slots, and leaves the next four slots blank. He spins the barrel and hands you the gun. You point the gun at yourself and pull the trigger. It doesn't go off. Your enemy tells you that you need to pull the trigger one more time, and that you can choose to either spin the barrel at random, or not, before pulling the trigger again. Spinning the barrel will position the barrel in a random position.

Assuming you'd like to live, should you spin the barrel or not before pulling the trigger again?