Ononot — Let an be a geometric sequence of positive real numbers with

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Geometric Sequenceshard

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Let $a_n$ be a geometric sequence of positive real numbers with common ratio $r$ . Suppose the terms satisfy the products $a_2 a_3 a_5 a_7 = 2^{12}$ and $a_3 a_5 a_7 a_{11} = 2^{20}$ . Which of the following statements is/are correct?