Year 8 Interactive Maths - Second Edition

Problem Solving Unit

Problem 5.1  The Fake Coin

There are 11 coins that looks identical but one of the coins is fake.  The fake coin weighs less than the true coins.  Find the minimum number of times you will have to use a balance to isolate the fake coin from the others.

Briefly explain the procedure used in your own words.

Study Another Topic in Chapter 5: Equations

[ Equations ] [ Equations and a Pair of Scales ] [ Problem Solving 1 ] [ Equations Involving Two or More Operations ] [ Equations with the Pronumeral on Both Sides ] [ Equations Containing Brackets ] [ Problem Solving 4 ] [ Equations Containing Fractions ] [ Problem Solving 5 ] [ Problem Solving Unit ] [ Projects ] [ Symbols ] [ Index ]