Multiple Choice Questions on The sum of three consecutive odd numbers is 20 more than the first of these numbers What is the midd........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The sum of three consecutive odd numbers is 20 more than the first of these numbers What is the midd...........

Quantitative Aptitude ( CCS) Number System
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    The sum of three consecutive odd numbers is 20 more than the first of these numbers. What is the middle number ?

    7

    Incorrect Answer

    9

    Correct Answer

    11

    Incorrect Answer

    Data Inadequate

    Incorrect Answer
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    Explanation:

    Suppose the three numbers are x, x + 2  and x + 4
    The, x + ( x+ 2) + ( x+ 4)
    = x + 20 ⇔ 2x = 14 ⇔ x = 7.
    ∴ Middle number = x + 2 = 9.
    Hence, option 2 is the correct answer.

    By: Amit Kumar
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