A palindrome is a number that reads the same forward and backward

您还没有登录，登录以后才可以查看答疑和进行提问。

试题详情

A palindrome is a number that reads the same forward and backward. For example, 2442 and 111 are palindromes. If 5-digit palindromes are formed using one or more of the digits, 1, 2, 3, how many such palindromes are possible?

A、12.0
B、15.0
C、18.0
D、24.0
E、27.0

答案：E

专业教师答疑

最新

提问

7
评分

7
浏览

Problem Solving

老师可以讲一下这道题吗

问个问题

答疑小程序

最热提问

Text Completion
Art restoration is a controversial field; while it......
Quantitative Comparison
n is a positive integer and n≠1 Quantity AnQuant......
Text Completion
Paintings created in India during the Mughal dynas......
Sentence Equivalence
While recognizing that recent reports of cyber war......
Sentence Equivalence
In 1884, Sewall and Dow agreed to join Roosevelt i......
Text Completion
In our daily lives, we often (i)_____ our separate......
Text Completion
Much of the newspapers readership found it hard to......
Sentence Equivalence
The life of a secret agent is dangerous enough, bu......

试题详情

专业教师答疑 最新 提问

问个问题

答疑小程序

最热提问

专业教师答疑

最新

提问