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In an AP , if the …

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In an AP , if the common different (_4) , and the seventh term (a7) is 4 , then find the first term.

    • Posted by Nasim Ali 6 years, 9 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Mehak Rathore 6 years, 9 months ago

    In this question a7 can be written as a+6d where a is first term and d is common different So a+6d=4 a+6(-4)=4 a-24=4 a=4+24 a=28. So first term is 28

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