Spot 5 differences in two Christmas tree below:

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

Next Number in the Series,

5, 16, 49, 104, ?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

John was drowned by he was not wet. How?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

What has to be broken before you can use it?

Can you name some countries which do not have the alphabet 'A' in them?