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Which term of the AP:121,117,113,........,is its …

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Which term of the AP:121,117,113,........,is its first negative term?(Hint:Find n for an<0)

    • Posted by Tushar Kumar 5 years, 8 months ago

    CBSE > Class 10 > Mathematics
    • 4 answers

    Sarthak Jain 5 years, 8 months ago

    32

    0Thank You

    Harsh Gaikwad 5 years, 8 months ago

    a=121 d= -4 Tn=a+(n-1)d<0 =121+(n-1)-4<0 =121+4-4n<0 =125-4n<0 =4n>125 =n>125/4 =n>31.25 So; 32th term will be its first negative term.

    2Thank You

    Satyam Kumar 5 years, 8 months ago

    A=121 and d=-4 An= a+(n-1)d =121+(n-1)4 Since a n is negative show value of a n is less then rero

    2Thank You

    Tushar Kumar 5 years, 8 months ago

    32

    2Thank You

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