Take away the whole and some still remain. What is it?

Which number comes next in the number series?

2, 9, 30, 93, ?

What has one letter and starts with an E?

Find the missing letter in the last circle logically in the given below picture.

A crime was committed at baker street. Ibrahim Dakota who was shot in the stomach was the main suspect. Sherlock questioned the suspect. The conversation started as:
Sherlock: What's your story, Ibrahim?
Ibrahim: I was walking around baker street and suddenly a man from the back shot me. I ran as fast as I could to save my life".
Sherlock: That is enough (and ask the police to arrest him).

Why does Sherlock think he is the murderer?

What is harder to catch the faster you run?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Can it be possible to build a house that has all its four walls facing towards the South?

What is black when you buy it, red when you use it, and gray when you throw it away?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?