जॉइन Examsbook
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प्र: How many numbers with distinct digits are possible product of whose digits is 18?

  • 1
    12
  • 2
    8
  • 3
    6
  • 4
    4
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उत्तर : 2. "8"
व्याख्या :

Answer: B) 8 Explanation: Two digit numbers: The two digits can be 2 and 9: Two possibilities 29 and 92.Three-digit numbers: The three digits can be 1, 2 and 9 => 3! Or 6 possibilities.We cannot have three digits as (3, 3, 2) as the digits have to be distinct.We cannot have numbers with 4 digits or more without repeating the digits.So, there are totally 8 numbers.

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Quantitative Aptitude CAT

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