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If the 8th term of an …

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If the 8th term of an AP is 37 and 15th term of is 15 more than the 12th term, find the AP. Hence, find the sum of first 15 terms of AP.

    • Posted by X Y 6 years, 11 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Aditya Maurya 6 years, 11 months ago

    a+7d=37............(1) a+14d=15+a+11d =3d=15 =d=5 Then=put the value of 'd' in eq.1 a+35=37 =a= 2 Hence,AP = 2,7,12,17......

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