5 天之前 · §33-3-33. Surcharge on fire and casualty insurance policies to benefit volunteer and part-volunteer fire departments; Public Employees Insurance Agency an

2015年9月3日 · So we have: $$3^ {33}+3^ {33}+3^ {33}=3^ {x}$$ I added the left side and obtained: $3 (3^ {33})=3^ {x}$ The problem I have is that extra $3$. If not, I...

2018年1月20日 · 定义1⊙2＝1+11，2⊙3＝2+22+222，3⊙4＝3+33+333+3333，计算 (5⊙3)×4的值。 按照题目所给出的规律，发现1⊙2中的2表示有两个数相加，并且第一个数为1，第二个数为11；以此类推，5⊙3为三个数相加，三个数依次为5，55，555。

数列3,33，333,3333…的an的通项公式是数列的一个通项公式为：an=1/3*（10^n-1）。 解题过程如下：解：因为3=1/3*（10-1）=1/3*（10^1-1），即a1=1/3*（10^1-1）。

2013年3月22日 · 3=9/3= (10^1-1)/3, 33=99/3= (10^2-1)/3, 333=999/3= (10^3-1)/3 ,...... 所以An= (10^n-1)/3 【数学之美】很高兴为你解答，不懂请追问！ 满意请采纳，谢谢！ O (∩_∩)O~

−38 Explanation: The first step is to evaluate the Parenthesis. That is calculate the parts in brackets. ((−3))3 = ((−3)×(−3)×(−3))= (−27) ...

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3=9/3= (10^1-1)/3, 33=99/3= (10^2-1)/3, 333=999/3= (10^3-1)/3 ,. 所以An= (10^n-1)/3

3 3 3=33，如何添加符号才能成立呢？ 挑战吧,本视频由365数学原创提供,4317次播放,好看视频是由百度团队打造的集内涵和颜值于一身的专业短视频聚合平台

Is the number 333,333,333,333,333,333,333,333,334 a perfect square? A number is divisible by 4 if and only if the number made of its last two digits is divisible by 4; this is immediate from the fact that 100 is divisible by 4. The last two digits are 34 = 2 \cdot 17 ...