Mathematics · Permutations and Combinations
Consider the following sequences representing strings of pebbles of three colors: Green (G), Blue (B), and Red (R): X = GGBRBRRBBR Y = GBRRBRBBRG Z = RBBRGGBRBR Which two strings form identical circular necklaces when the first and last pebbles are joined together?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1None of them are identical
- 2X and Z✓
- 3Y and Z
- 4X and Y
Correct answer
X and Z
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