The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What is black when you buy it, red when you use it, and gray when you throw it away?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

Give it food and it will live; give it water and it will die.

A man is found hanging dead from the ceiling of a room. The room’s dimensions are 15 x 15 x 15. The man is only 6ft tall and the rope was only 2ft long. There are no windows and only one door to the room. The door is bolted shut from the inside, and a puddle of water is under the man. How did he kill himself?

Take away the whole and some still remain. What is it?