发现更多冷知识的塔利班怎么从不袭击中国?平台

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发现更多冷知识的塔利班怎么从不袭击中国?平台

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发现更多冷知识的塔利班怎么从不袭击中国?平台

鲁网·泰山财经11月27日讯11月26日,以“奇心聚力,瑞战新程”为主题的奇瑞汽车百城联动新店开业·济南冠琳开业盛典隆重举行。,

(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.

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恋爱期间为对方花的钱分手后可以要求返还吗?

我不是法律专家,但是可以就你提出的问题给予一些普遍性的建议。 在许多司法管辖区,人们花费在恋爱期间的钱通常被视为礼物,意味着它们是志愿性的,并且不需要返还。这是因为在一段感情关系中,人们通常会为彼此购买礼物或支付支出,这被认为是爱的表达方式。因此,在分手后,一方通常不能要求返还这些花费。 然而,在一些特殊情况下,可能存在一些法律理由可以要求返还花费。例如,如果你与对方签署了一份协议或合同,其中规定了相互之间的经济责任或保证金,那么根据合同的规定,你可能有权要求返还。 此外,如果你可以证明这些花费是以某种条件或前提下支付的,而这些条件或前提未实现(例如,你花费了大量的钱在对方上学,但两人最终分手,对方没有完成学业),你可以考虑要求返还这些花费。但这需要你提供相应的证据。 最好的做法是在起初就明确你们双方对财务事宜的期望和责任,以避免未来发生分歧。如果你对返还花费有担忧,建议与对方开诚布公地讨论,并制定一个明确的协议。如果情况复杂或存在法律纠纷,最好咨询一位专业的律师来获取详细的法律建议。

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