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.

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

who is silent in the parliament?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

I am lying and I always lie. Tell me whether I am lying or telling the truth.