John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

I travel all around the world but always stay in the corner. What am I?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

A man dies of old age on his 25 birthday. How is this possible?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

What is the difference between a jeweller and a jailer?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

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

A deaf and mute man goes to the train station. Tickets for the train are 50 cents each. The man goes to the ticket booth and hands the man inside just a dollar. The man in the booth hands him two tickets.

How did the man in the booth know to give him two tickets without even looking at him?

Which number should replace the question mark?