Multiple Choice Questions on A number of two digit has 3 for its unit 39 s digit and the sum of digit is 1 7 of the number itself........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A number of two digit has 3 for its unit 39 s digit and the sum of digit is 1 7 of the number itself...........

Quantitative Aptitude ( CCS) Number System
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    A number of two digit has 3 for its unit's digit,and the sum of digit is 1/7 of the number itself. The number is

    43

    Incorrect Answer

    53

    Incorrect Answer

    63

    Correct Answer

    73

    Incorrect Answer
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    Explanation:

    Let the ten's digit be x,
    then, number = 10x + 3 and
    sum of digits = (x + 3)
    So, (x + 3) = 1/7 (10x + 3)
    = 7x + 21 = 10x + 3
    = 3x = 18
    x = 6
    Hence, the number is 63.

    By: Amit Kumar
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