GATE XE (Engineering Sciences) 2023 - Question 3

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Section: General Aptitude | Marks: 1

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?

  • A. 125
  • B. 720
  • C. 60
  • D. 80

Answer: D. 80

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