How many times do a clock's hands overlap in a day ?

What building has the most stories?

What is the next number in this matchsticks series riddle?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

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 ?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

I guess 76.8% of readers will like this riddle.

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

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?