7 amethyst and 6 jade stones were placed next to each other to create a round bracelet. In how many ways can the stones be arranged such that no two amethyst stones are placed next to each other?
Added by Rebecca M.
Step 1
This creates 6 spaces between the jade stones where we can place the amethyst stones. Since we have 7 amethyst stones, one of these spaces must contain 2 amethyst stones. Choose which space will contain 2 amethyst stones. There are 6 choices for this. Then, Show more…
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