Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 Re: Maths Is Fun - Suggestions and Comments » A better solution to the 12 identical pool balls problem » 2011-09-07 06:37:42

Instead of dividing it into 3 groups...why not into 4 groups of 3 each
(1) 3
(2)3
(3)3
(4) 3

1) (1) vs (2)  - if equal weight
     (1) vs (3) - from this attemp you will find which has the odd one and you will find in which group that odd one is
         Now you got one group having 3 balls..in which the odd ball is
     now  1 ball vs 1 ball ...solution found in 3 attempts

Board footer

Powered by FluxBB