Name a key which is hardest to turn.

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

You are provided with a grid (as shown in the picture). Can you fill the squares with numbers 1-8 in a manner that none of the two consecutive numbers are placed next to each other in any direction (vertically, horizontally or diagonally?)

What does this rebus means ?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

What is the riddle which can be asked all day with a different correct answer each time.

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

You need to arrange three 7 and mathematical symbols to form number 1?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?