2. 外语
  3. the average of n consecutive integers beginning with 1 is 12 Quantity A: n Quantity B: 24

the average of n consecutive integers beginning with 1 is 12 Quantity A: n Quantity B: 24

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问题 the average of n consecutive integers beginning with 1 is 12
Quantity A: n
Quantity B: 24
选项 A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.
答案B
解析 利用等差数列的求和公式，那么S=12n=n(n+1)/2，n=23，选择B。
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