Can you count the number of matches in the picture below ?

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

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

Count the number of triangles in the given picture.

In the image below, can you find the value of an angle(y)

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?