AMC 8 1993 Problem 9

AMC8 1993 年第 9 题

表达式与运算★★☆☆☆

Consider the operation

\ast

defined by the table below. What is

(2\ast 4)\ast 1

考虑由下表定义的运算

\ast

。

(2\ast 4)\ast 1

等于多少？

正确答案 · Correct Answer

解析 · Solution

Solution 1

Using the chart, (2*4)=3 and (1*3)=3. Therefore,

(2*4)*(1*3)=3*3=\text{(D)4}

继续练习