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

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

If your uncle’s sister is not your aunt, what relation is she to you?

What is always in front of you but can’t be seen?

On a beautiful Sunday morning, You ordered a hot tea to your hotel room and suddenly you remember an important thing that needed to be done right now will take around 3 minutes to complete.
Like most people you like your tea to be hot while drinking so, when should you pour cream in the tea?
1. straight away
2. Just people, you drink the team
3. Its does not matter

My location can be determined by the below rebus.
So where am i ?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

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

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Can you count the number of children in the picture below