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?

Find the missing number in the series below

13 -21 34 -55 ? -144

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

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

What does does this rebus picture means ?

I have Rs.50 and I spend it in the way as below.

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

I look at you, you look at me, I raise my right, you raise your left. What am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I am sometimes honest
Sometimes dishonest
I can be sweet and also bitter
I can hurt you real bad and
also make u smile and blush ☺️
What am I?