The Heavier One



If you had 1000 kilograms of feathers and 1000 kilograms of stones which would be heavier?

Ah! Click here to read the solution.



The Owner with the Canaries



I am the owner of a pet store. 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?

Ah! Click here to read the solution.