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The 19th term of an A.P.is …

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The 19th term of an A.P.is equal to 3 times its 6th term. If its 9th term is 19, find the A.P.

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

    CBSE > Class 10 > Mathematics
    • 3 answers

    Rashmitha Deekonda 6 years, 10 months ago

    a19 =a +18d= 3(a+5d) a+18d=3a+15d 3d=2a a=3/2d a+8d=19 3/2d+8d=19 3d+16d/2=19 19d/2=19 d=2 a=19-8(2) = 3

    2Thank You

    Røcky Gøwda?☠️ 6 years, 10 months ago

    3,5,7,9.........

    1Thank You

    Puja Sahoo? 6 years, 10 months ago

    3,5,7,9........

    2Thank You

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