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MATH / Two geometric sequences a₁,a₂,a₃,… and b₁,b₂,b₃,… have the same common ratio, with a₁=27, b₁=99, and a₁₅=b₁₁. Find a₉. · Discussion

Discussing Two geometric sequences a₁,a₂,a₃,… and b₁,b₂,b₃,… have the same common ratio, with a₁=27, b₁=99, and a₁₅=b₁₁. Find a₉. · MATH

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