时间：2025-05-23 10:18
地点：郊区
vippay数字钱包
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市、区两级人社部门创新组建优质人力资源服务机构“访企团”，通过项目路演、集中对接、入企交流等多种形式为人力资源服务机构和园区企业搭建沟通交流平台。
前50名门槛135亿元，比去年下降5亿元（4%）。
(1-1/2)+(1/2-1/3)+(1/3-1/4)+···+（1/2009-1/2010
To find the sum of the given series, we need to add all the terms together. (1 - 1/2) + (1/2 - 1/3) + (1/3 - 1/4) + ... + (1/2009 - 1/2010) We can simplify each term by finding the common denominator. 1 - 1/2 = 2/2 - 1/2 = 1/2 1/2 - 1/3 = 3/6 - 2/6 = 1/6 1/3 - 1/4 = 4/12 - 3/12 = 1/12 We can observe that each term follows this pattern - the denominator of the second fraction becomes the denominator of the first fraction in the next term. So, the series can be written as: 1/2 + 1/6 + 1/12 + ... + 1/2009 To find the sum of this series, we need to find the common denominator of all the fractions. The common denominator of 2, 6, 12, ..., 2009 will be the least common multiple (LCM) of these numbers. Calculating the LCM of these numbers is a bit lengthy. Instead, we can find the LCM of 2, 3, 4, ..., 2010, and then divide by the LCM of 2, 3, 4, ..., 2009. LCM(2, 3, 4, ..., 2010) / LCM(2, 3, 4, ..., 2009) = 2010 / 2 = 1005 So, the common denominator is 1005. To add the fractions, we need to express them with the common denominator: 1/2 = (1/2) * (1005/1005) = 1005/2010 1/6 = (1/6) * (1005/1005) = 167.5/2010 1/12 = (1/12) * (1005/1005) = 83.75/2010 Now we can add: 1005/2010 + 167.5/2010 + 83.75/2010 + ... + 1/2009 We can observe that the denominators of the fractions form an arithmetic sequence, and the numerators follow the same pattern. Using the formula for the sum of an arithmetic sequence: Sum = (first term + last term) * number of terms / 2 In this case, the first term is 1005/2010, the last term is 1/2009, and the number of terms is 2010. Sum = (1005/2010 + 1/2009) * 2010/2 Sum = (1005/2010 + 1/2009) * 1005 Sum = (1005 * 2009 + 1 * 2010) / 2 Sum = (2019955 + 2010) / 2 Sum = 2021965 / 2 Sum = 1010982.5 Therefore, the sum of the given series is 1010982.5.
一、西瓜 西瓜是夏季最受欢迎的水果之一，也是解暑利器。
双方的准备都很充足，结果白鹿出现失误，不过王鹤棣迅速拿起了盾牌，严严实实的挡住了白鹿的脸。
全国广袤的大地上，处处留下了“杨凌良种”的印记。
用“健康食物”当零食，就“健康”了吗？
不一定。虽然选择健康食物作为零食是一个好的做法，但仍然需要注意食用的方式和量。即使是健康食物，如果过量摄入或者频繁进食，仍然可能导致体重增加或其他健康问题。另外，某些健康食物也可能含有较高的糖分、盐分或添加剂，需要仔细阅读食物标签以保持健康。