There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

What English word has three consecutive double letters?

Keyboard words are not in alphabetical order, Why?

What has many keys but can’t open a single lock?

Different lights make me strange by changing me into different sizes. What am I?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Why is the Hole below a Lock?

Which number should replace the question mark?