Where do you go to learn how to make ice cream?

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?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Which wheel of car does not rotate when you turn your car right?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

In which direction should the missing arrow point?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

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