Multiple Choice Questions on The sum of digits of a two digit number is 10 When the digits are reversed the number decreases by 5........... for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

The sum of digits of a two digit number is 10 When the digits are reversed the number decreases by 5...........

Quantitative Aptitude (RRB NTPC) Number System
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    The sum of digits of a two-digit number is 10. When the digits are reversed, the number decreases by 54. Find the changed number.

    73

    Incorrect Answer

    28

    Correct Answer

    82

    Incorrect Answer

    37

    Incorrect Answer
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    Explanation:
    10x+y–10y–x=54
    9(x–y)=54
    x–y=6
    x+y=10
    From this we get x=8, y=2
    Number =28

    By: Barka Mirza
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