Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

No matter how little or how much you use me, you change me every month. What am I?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

Using exactly three matchsticks, can you divide the area into two equal parts?

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).

I’m orange, I wear a green hat and I sound like a parrot. What am I?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?