Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

Can you count the number of triangles in the given picture?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Find the next number in the series.
1 10 24 43 67 ?

The more of this there is, the less you see. What is it?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

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

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?