Multiple Choice Questions on If an 3 minus 4n then what is a1 a2 a3 an equal to ........ for CDS Exam Preparation

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Multiple Choice Questions

If an 3 minus 4n then what is a1 a2 a3 an equal to ........

Quantitative Aptitude (CDS) Quadratic Equations
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    If an = 3 − 4n, then what is a1 + a2 + a3 + ........ an equal to?

    –n(4n-3)

    Incorrect Answer

    –n(2n-1)

    Correct Answer

    -n2

    Incorrect Answer

    –n(2n+1)

    Incorrect Answer
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    Explanation:

    Given an = 3 − 4n,

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