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难题/算术难题/两个4等于64？
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难题
|
算术难题
难题
|
算术难题
| 两个4等于64？
你可以使用数字 4 两次（但不能使用其他数字）和尽可能多数学运算符，以便写出等于 64 的表达式。
表达式是什么？
解决方案
类别
:
书籍：难题
华夏公益教科书
