If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

What have one eye but still cannot see?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

My location can be determined by the below rebus.
So where am i ?

What does this simple rebus mean?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?