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A round badge has 4 beads set around its edge, each red, green or blue. Turning the badge doesn't make a new one. How many different badges are there?
Three-colour badge≈ 2050
Which tools will this count need?
Read the question and decide the method first.
The figure appears once you have named the method, so it can't give the method away.
Your count
Each step you prove lands here, with the tool it used.