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?

Name a key which is hardest to turn.

What is harder to catch the faster you run?

Below rebus represent famous DiCaprio movie. Can you name it?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

What does this Rebus Picture mean?

Can you decipher the two rows to find the hidden word?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Next Number in the Series,

5, 16, 49, 104, ?