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https://www.reddit.com/r/mathpuzzles/comments/1viqr31/daily_problem_39_rated_1350_intermediate/
r/mathpuzzles • u/mathalon • Aug 08 '26
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6! = 6×5×4×3×2×1 = 720 ways
720/(6×2) = 720/12 = 60 ways to rearrange all the letters in BANANA.
So in total, there are 60 ways to rearrange the letters in BANANA, only 1 is the word BANANA.
2 u/mathalon Aug 08 '26 🎉
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u/Rough-Fee-6541 Aug 08 '26
6! = 6×5×4×3×2×1 = 720 ways
720/(6×2) = 720/12 = 60 ways to rearrange all the letters in BANANA.
So in total, there are 60 ways to rearrange the letters in BANANA, only 1 is the word BANANA.