You may also like

problem icon

First Forward Into Logo 6: Variables and Procedures

Learn to write procedures and build them into Logo programs. Learn to use variables.

problem icon

First Forward Into Logo 8: More about Variables

Write a Logo program, putting in variables, and see the effect when you change the variables.

problem icon


A geometry lab crafted in a functional programming language. Ported to Flash from the original java at

Weighing Scales

Stage: 4 Short Challenge Level: Challenge Level:1
See all short problems arranged by curriculum topic in the short problems collection

A child's box of bricks contains cubes, cones and spheres. Two cones and a sphere on one side of a pair of scales will just balance a cube on the other side;

and a sphere and a cube together will just balance three cones.
How many spheres will just balance a single cone?


If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.



This problem is taken from the UKMT Mathematical Challenges.