Can you move 2 matchsticks to form four equal sized squares.

A sundial has the fewest moving parts of any timepiece. Which has the most?

There is something which you can be arrested for attempting but not for successfully completing.

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

Solve the equation in the image by looking at the pattern closely.

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?