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What is the common difference of …

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What is the common difference of an A.P. in which a21-a7=84

    • Posted by ?Aryan ? 6 years, 11 months ago

    CBSE > Class 10 > Mathematics
    • 5 answers

    Avanish Yadav 6 years, 11 months ago

    nisha tera galat hai

    1Thank You

    ???????? ???? 6 years, 11 months ago

    The Common difference of AP in which a21-a7=84 is 6. a+20d-a+6d=84. 26d=84 d=6

    0Thank You

    Vishu Joshi 6 years, 11 months ago

    a + 20d - a - 6d =84 14 d = 84 d = 84 / 14 d = 6

    0Thank You

    Avanish Yadav 6 years, 11 months ago

    a+20d-a+6d=84 d=6

    2Thank You

    Puja Sahoo? 6 years, 11 months ago

    d=6

    3Thank You

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