【GMAT考满分数学PS题库】Which of the following is closest in value to $${9_真题_答案_解析 GMAT考满分官网

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题目内容

Which of the following is closest in value to

${9}^{9}-{9}^{2}$ ?

${9}^{9}$
${9}^{8}$
${9}^{7}$
${9}^{6}$
${9}^{5}$

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正确答案: A

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