When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Which wheel of car does not rotate when you turn your car right?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

What do you get if you add 2 to 100 four times?

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