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3 June, 08:18

163,160,157, ... find the 42nd term

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  1. 3 June, 10:04
    0
    It's 40

    Step-by-step explanation:

    Arithmetic Sequence.

    Common Difference:

    160-163=-3

    157-160=-3

    d=-3

    Explicit Formula:

    an=a1 + (n-1) d



    a42 =163 + (41) (-3)

    a42 = 40
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