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?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

Can you make four (4) nines (9) equal 100?

Why is the Hole below a Lock?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

Solve the rebus riddle in the picture below.