AMC 8 2014 Problem 4
AMC8 2014 年第 4 题
奇偶性★★☆☆☆
The sum of two prime numbers is 85 . What is the product of these two prime numbers?
两个质数之和为 85，问这两个质数的乘积是多少？
- A.85
- B.91
- C.115
- D.133
- E.166
正确答案 · Correct Answer
E
解析 · Solution
Solution 1
Since the two prime numbers sum to an odd number, one of them must be even. The only even prime number is 2. The other prime number is 85-2=83, and the product of these two numbers is .
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