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25-07-2018
Mathematics

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Find the fifth term of the geometric sequence in which a1=21 and r=2

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25-07-2018

[tex]a = 21 \\ r = 2 \\ \\ a_{5} = a {r}^{4} = 21 \times {2}^{4} \\ a_{5} = 21 \times 16 = 336 \: \: \: \: Ans.[/tex]

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