AMC 8 2013 Problem 15

AMC8 2013 年第 15

表达式与运算★★★☆☆
If 3^p + 3^4 = 90, 2^r + 44 = 76, and 5^3 + 6^s = 1421, what is the product of p, r, and s?
如果,
  1. A.27
  2. B.40
  3. C.50
  4. D.70
  5. E.90

正确答案 · Correct Answer

B

解析 · Solution

解析整理中

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