Replace the question mark with the correct number in below Picture:

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

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

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

What goes up but never comes down?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?