Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

What jumps when it walks and sits when it stands?

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?

Be active and find the killer in the picture Riddle below.

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

It belongs to you, but other people use it more than you do. What is it?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?