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17 November, 01:25

Find the fifth term in the geometric sequence, given the first term and the common ratio. a1=243 and r=1/3

a5=?

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Answers (1)
  1. 17 November, 02:09
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    3

    Step-by-step explanation:

    a5 = a * r^4 (from general formular of a GP)

    = 243 * (1/3) ^4 =. 243 * 1/81 = 3
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