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

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

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

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

Why despite killing dozens of people Charley and Wilma were not punished?

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

What is red and smells like blue paint?

Identify the 10 differences between the two given pictures.

What has a bottom at the top?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.