Multiple Choice Questions on If the sum of digits is 9 and the difference between the digit in the ten rsquo s place and unit rsq........... for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

If the sum of digits is 9 and the difference between the digit in the ten rsquo s place and unit rsq...........

Quantitative Aptitude (RRB NTPC) Number System
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    If the sum of digits is 9 and the difference between the digit in the ten’s place and unit’s place is 1. Then the two digit number is?

    45

    Incorrect Answer

    63

    Incorrect Answer

    54

    Correct Answer

    72

    Incorrect Answer
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    Explanation:

    x + y = 9
    x - y =1
    therefore x= 5, y=4

    By: Barka Mirza
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