Mathematics · Permutations and Combinations
A 'frabjous' number is defined as a 3-digit number with all digits odd, and no two adjacent digits being the same. For example, 137 is a frabjous number, while 133 is not. How many such frabjous numbers exist?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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Correct answer
80
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