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3rd Class Mathematics Numbers Question Bank Numbers

  • question_answer
    Let's write the numbers from 1 to 15 one after the other: 1234567 ..................... 131415 Delete 18 digits from this number so that you would get the highest possible number of three digits when arranged the remaining digits in descending order. What is this number?

    A) 999       

    B) 789

    C) 987                         

    D) 415

    Correct Answer: C

    Solution :

    1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
    Our aim is to get highest possible 3-digit number. First delete 0, next 8 one's, then 2 two's, then 2 three's, then 2 four's, then 2 five's and then 1 six. After deleting these 18 digits, we are left with 7, 8 & 9. \[\therefore \] The highest possible number is 987.


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