If it took eight men ten hours to build a wall, how long would it take four men to build it?

Name a key which is hardest to turn.

In an office's desk, you find a unique method that shows the current day of the month. Two numbered cubes are used to depict the current date.

Can you find out the numbers on both the cubes so that each date can be mentioned using them?

Please note that you have to use both the cubes to display any date. Thus the 1st day must be represented by 01 and so on.

John was drowned by he was not wet. How?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

Decode the movie name from the below picture?