What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

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

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Jenifer is learning to drive her car. She went down a one way lane and in the wrong direction. But she do not break any law.

How come ?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?