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13 October, 03:22

What is the 41st term - 13,-17,-21,-25 ...

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  1. 13 October, 03:36
    0
    Adds - 4 each time

    first term is - 13

    an=a1 + (n-1) d

    d=common difference

    a1=first term

    an=-13 + (n-1) (-4)

    an=-13-4 (n-1)

    41 term

    a41=-13-4 (41-1)

    a41=-13-4 (40)

    a41=-13-160

    a41=-173

    -173
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