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16 June, 09:31

What is the 30th term of 3n-1

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  1. 16 June, 09:57
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    a_n = a_1 + (n-1) d

    a_n = 4 + 3 (n-1) = 3n + 1

    So the 30th term is a_30 = 3*30 + 1 = 91
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