You may also like

problem icon

Counting on Letters

The letters of the word ABACUS have been arranged in the shape of a triangle. How many different ways can you find to read the word ABACUS from this triangular pattern?

problem icon

Magic Caterpillars

Label the joints and legs of these graph theory caterpillars so that the vertex sums are all equal.

problem icon

Plum Tree

Label this plum tree graph to make it totally magic!

Weekly Problem 3 - 2008

Stage: 3 and 4 Challenge Level: Challenge Level:1

The counters of the same colour form diagonal lines across the board. So counting the counters from these lines we get 1, 2, 7, 8, 3 and 2 squares, so the fraction is 23/64.

This problem is taken from the UKMT Mathematical Challenges.

View the previous week's solution
View the current weekly problem