If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

I am an odd number. Take away a letter and I become even. What number am I?

What is the word or phrase?

What happened when the wheel was invented?

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 ()

Which is heavier: a ton of bricks or a ton of feathers?

Two friends Smith and Andrew were talking about the bravery of their families. Smith told great stories about his courageous grandfather who fought for Britain in "World War I". Andrew told that his grandfather was so brave that in 1919 just after the war he was honoured with a bravery medal with the words "For our Courageous Soldiers In World War I" embedded into it. Smith knows that his friend is lying. How?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

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?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?