what does this picture(rebus) riddle means ?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Can you find out the total number of triangles in the given figure?

What is more useful when it is broken?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

The more of this there is, the less you see. What is it?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What will you call your mother's brother's brother-in-law?