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13 November, 10:59

Find the 11th term of the geometric sequence 1, 4, 16, ...

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  1. 13 November, 11:45
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    a (11) = 4^10 = 1048576

    Step-by-step explanation:

    The first term of this geometric sequence, a (1), is 1, and the common ratio, r, is 4. Each new term is 4 times the previous term. Thus,

    a (n) = 1*4^ (n - 1), and

    a (11) = 4^10 = 1048576
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