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[" 13.In the expansion of "(sqrt(a)+(1)/...

[" 13.In the expansion of "(sqrt(a)+(1)/(sqrt(3a)))^(n)" if the ratio of "],[" the binomial coefficient of the "4" th term to the "],[" binomial coefficient of the "3" rd term is "(10)/(3)," the "],[" 5th term is "],[[" 1) "55a," 2) "45a^(2)," 3) "50a^(2)," (4) "55a^(2)]]

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