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01-01-2018
Mathematics

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27,9,3... find the 7th term of the geometric sequence

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anchitthawi anchitthawi

03-01-2018

an= a1r^(n-1)
a7= 27(1/3)^(7-1)
= 27(1/3)^6
= (1/3)^(-3) * (1/3)^6
= (1/3)^(-3+6)
= (1/3)^3
= 1/27 #

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