I have branches, but no fruit, trunk or leaves. What am I?

Find the missing number in the sequence below:

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

There are five people. One of them shot and killed one of the other five.
We know following clues:
1. Dan ran in the NY City Marathon yesterday with one of the innocent men.
2. Mike consider being a farmer before he moved to the city.
3. Jeff is a top notch computer consultant and wants to install Ben new computer next week.
4. The murderer had his leg amputated last month.
5. Ben met Jack for the first time six months ago.
6. Jack has been in seclusion since the crime.
7. Dan used to drink heavily.
8. Ben and Jeff built their last computers together.
9. The murderer is Jack's brother. They grew up together in Seattle.

Consider yourself to be a famous detective "Sherlock Homles", Can you find the killer?

What can you deduce from the following BrainBat?

CRY
LMKI

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Find the value of "a" by solving the maths equation in the picture below:

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Count the Triangle in the figure given below:

If 1+9+8=1, what is 2+8+9?