Identify the hidden meaning behind this picture?

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

Who has married many women but was never married?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

I am the fastest animal but cannot climb the tree. What am I?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

Why is the Hole below a Lock?

Can you place six X (crosses) in below board without making three in a row in any way ?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?