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What is the common difference of …

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What is the common difference of an ap in which a21 - a7=84

    • Posted by Nayan Gaur 1 year, 1 month ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    M Charith 1 year, 1 month ago

    d=6

    0Thank You

    Suraj Soni 1 year, 1 month ago

    a21=a+20d a7=a+6d a21-a7=a+20d-a-6d a21-a7=14d Given that a21-a7=84 14d=84 Hence,d=6(answer)

    1Thank You

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