# Find the Number of Cubes Removed

Requires a Wolfram Notebook System

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

Requires a Wolfram Notebook System

Edit on desktop, mobile and cloud with any Wolfram Language product.

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

## Snapshots

## Details

Reference

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

## Permanent Citation

"Find the Number of Cubes Removed"

http://demonstrations.wolfram.com/FindTheNumberOfCubesRemoved/

Wolfram Demonstrations Project

Published: January 6 2012