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The sum of first m terms …

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The sum of first m terms of an A.P. is 4m^2-m. If its nth term is 107, find the value of n. Also , find the 21st term of this A.P.

    • Posted by Aayu... Sad Girl....??? 6 years, 10 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Diksha?.. Atm..?? 6 years, 10 months ago

    Mera to science physics and sst me his..

    2Thank You

    Puja Sahoo? 6 years, 10 months ago

    n=14, and a21=163

    4Thank You

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