Decimal Christmas Equals Octal Halloween?

Everyday we use the decimal number system (base-10); however, some programmers sometimes represent numbers using the octal number system (base-8).

The following is an old math joke...

	Dec 25 = 31 Oct

MathBabbler wrote the following on a classroom whiteboard on 31 October 2011.

After looking at the picture later, he wished he written 5x1 instead of 1x5.

Exercises
  1. The commutative property of multiplication states: a * b = ________

  2. No or Yes: The commutative property is also true for division.

  3. Explain why 2510 = 318


Creator: Gerald Thurman [gthurman@gmail.com]
Created: 25 December 2011

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