GRE数学难题,which of the following CANNOT be expressed as the product of exactly 2 consecutive integers?A:(2)(3)(7)B:(2)(3)(7)(11)C:(3的平方)(11)(13)D:(2)(5的平方)(13)E:(2的平

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GRE数学难题,which of the following CANNOT be expressed as the product of exactly 2 consecutive integers?A:(2)(3)(7)B:(2)(3)(7)(11)C:(3的平方)(11)(13)D:(2)(5的平方)(13)E:(2的平
GRE数学难题,
which of the following CANNOT be expressed as the product of exactly 2 consecutive integers?
A:(2)(3)(7)
B:(2)(3)(7)(11)
C:(3的平方)(11)(13)
D:(2)(5的平方)(13)
E:(2的平方)(3)(5)(7)
题目就是这样,由于我不会打平方,所以用文字表示.答案是选C,

GRE数学难题,which of the following CANNOT be expressed as the product of exactly 2 consecutive integers?A:(2)(3)(7)B:(2)(3)(7)(11)C:(3的平方)(11)(13)D:(2)(5的平方)(13)E:(2的平
化简一下,如A 表示为6×7 B为21×22 以此类推,只有C不行

答案中的表示方法应该是在括号之间省略掉了乘号。题目的意思就是括号里的数字相乘所得的那个数是否可以分解为正好两个连续整数的乘积。
可以看到A是6*7,B是21*22,D是25*26,E是14*15,只有C不行

你应该是题目没看懂吧
product是乘积
consecutive integers是连续整数
也就是说选项中的数字可以乘积成连续整数
原理上面都有解释……不赘述了

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