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Determine AP whose third term is …

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Determine AP whose third term is 5 and 7th term is 9

    • Posted by Rahul Malik 1 year, 2 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Zaima Anjum 1 year, 2 months ago

    GIVEN a3=5 => a+2d=5____[1] a7=9 =>a+6d=9_____[2] subtract eqn[2] from eqn[1] -4d=-4 d=4/4 d=1 put d=1 in eqn[1] a+2[1]=5 a=5-2 a=3 now AP is 3,4,5........

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