What is the fastest way to double your money?

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?

Spot 5 differences in two Christmas tree below:

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Who has married many women but was never married?

Next Number in the Series,

5, 16, 49, 104, ?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

What does the below image rebus riddle means ?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

The Judge knows that Alamgir was killed by his girlfriend Jasline, but the judge is unsure whether to punish her. Why?