Multiple Choice Questions on If 8 x y z 20 are an arithmetic progression what is the value of z ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

If 8 x y z 20 are an arithmetic progression what is the value of z ........

Quantitative Aptitude ( CCS) Arithmetic progression
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    If 8, x, y, z, 20 are an arithmetic progression, what is the value of  z?

    11

    Incorrect Answer

    14

    Incorrect Answer

    17

    Correct Answer

    19

    Incorrect Answer
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    Explanation:

    For an AP,
    l = a+(n-1)d
    Last term l=20
    First term a=8
    Number of terms in series n=5
    20=8+(5-1)d
    d=3
    So common difference is 3
    So, x=8+3=11, y=11+3=14 and z=14+3=17.

    By: Amit Kumar
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