Is it possible to draw a 5-pointed star without taking your pencil off the paper? Is it possible to draw a 6-pointed star in the same way without taking your pen off?
Use the information about the ducks on a particular farm to find out which of the statements about them must be true.
Find out about Magic Squares in this article written for students. Why are they magic?!
Try starting off with three easy numbers like 3, 4 and 5. Add them together and what do you get?
Can you find three equal numbers with the same sum?
Now try three more and see if there is a similar answer.