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

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

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Can you write down eight eights so that they add up to one thousand?

What does this rebus puzzle means ?

A girl rode into a tourist spot out of the city on Thursday. She loved the place and decided to stay for a few days. She stayed for four days and then she left for back home on Thursday.

How can this be possible?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

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

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?