Henry Ernest Dudeney/Puzzles and Curious Problems/275 - The Necklace Problem

Puzzles and Curious Problems by Henry Ernest Dudeney: $275$

The Necklace Problem

How many different necklaces can be made with $8$ beads, where each bead may be either black or white,

the beads being indistinguishable except by colour?

Sources

• 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Combination and Group Problems: $275$. -- The Necklace Problem
• 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Combinatorial & Topological Problems: Miscellaneous Combinatorial Puzzles: $458$. The Necklace Problem