What can you catch but never throw?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

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

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?