Find the Number of Cubes Removed

Initializing live version
Download to Desktop

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.

A rectangular solid consists of small white cubes. A number of the cubes are removed by punching out all the cubes in the designated columns from front to back, top to bottom, and side to side. Find the number of removed cubes.

Contributed by: Izidor Hafner (January 2012)
Open content licensed under CC BY-NC-SA




[1] Canadian Mathematics Competition: Problems, Vol. 4, Waterloo, Ontario, Canada: University of Waterloo, 1991 p. 59, problem 1990-G7-25.

Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.