What four weights can be used to balance from 1 to 30 pounds?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

In the Wild West, you are challenged into a death match by two bounty hunters nicknamed Golden Revolver (GR) and Killer Boots (KB). You accept the challenge. None of you want to waste any of the bullet and so a certain rules are laid down:

1) All of you will shoot in a given order till the last man standing.
2) Each of you shoots only once upon his turn.
3) If any one of you is injured, the other two will finish him off with an iron rod.
4) The worst shooter of all (which is you) shoots first and the best one shoots at the last.

Now, how will you plan things if you know that you hit every third shot of yours, KB hits every second shot and GR hits every shot ?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

While handling a project, the landscaper is asked by the owner of the mansion that he wants four trees in front of his mansion that are exactly equidistant from each other.

How will he do it?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

You can hear me, but you can't touch or see me.

What am I?

What has lots of eyes, but can’t see?