河北11选5复式投注表二十选五投注规则十一个数字复试多少钱,中二等奖多少钱

63.某彩票设有一等奖和二等奖,其玩法为从10个数字中选出4个,如果当期开奖的4个数字组合与所选数字有3个相同则中二等奖,奖金为投注金额的3倍,4个数字完全相同则中一等奖.为了保证彩票理论中奖金额与投注金额之比符合国家50%的规定,则一等奖的奖金应为二等奖的多少倍?  A.8 B.9 C.10 D.11  【解析】本题考查的是概率问题.  根据题意,假设每注金额为1,那么二等奖的奖金为3,则一共有C(10,4)=210注,那么一等奖的有1注,二等奖的有C(4,3)C(6,1)=24注,设一等奖的金额为x,那么就有(x 24×3)/210=50%,解得x=33,那么一等奖就是二等奖金额的33/3=11倍,故本题的正确答案为D选项.为什么二等奖的概率为C(4,3)C(6,1)为什么要考虑非中奖概率的呢?中奖号码有六个,为什么就是 C(61)呢,
C(4,3)C(6,1)是中二等奖的组合数,C(4,3)C(6,1)/C(10,4)才是中二等奖的概率.中二等奖的情况是4个号码有三个为中奖号码中的三个相同,有C(4,3)种选择,另外一个是非中奖号码,非中奖号码有6个,有C(6,1)种选择,故中二等奖总共有C(4,3)C(6,1)种选择.
为什么要考虑非中奖概率的呢?非中奖号码有六个,为什么就是
C(61)了呢,C(61)代表什么意思?
因为二等奖也是4个号码,由3个中奖号码和一个非中奖号码组成,中奖的3个号码选择组合有C(4,3),非中奖号码6选一为C(6,1)
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用生日数字买7星彩 坚持追号中得二等奖
  体彩7星彩第16019期开奖号码“4984279”,未开出一等奖,全国开出二等奖11注。来自邢台市沙河市路世通1站的彩民表现尤为神奇,拿走了1注41411元二等奖。中奖的是一张3注单式票,其中第三注“4984273”号码击中二等奖。
  据幸运中得二等奖的王先生(化名)透露,他喜欢投注7星彩、超级大乐透奖池高的玩法,而且还喜欢采用自己的幸运数字或家人的生日号码投注。曾利用这种购彩方式,中过多次小奖,但上万的大奖一直未能邂逅。开奖当日下午5时多,在下班路过1站时,他很自然地拐了进去,叫销售员打了3注7星彩,这是王先生长期以来一直购买的号码,追号的理由是因为这组数字由家人的生日与幸运数字组成。第二天,他又到体彩站点准备购买超级大乐透时,就把7星彩的彩票取了出来,然后对照着走势图上贴着的号码进行核对。令他欣喜的是,第三注号码“4984273”与开奖号码“4984279”就差第一个号码,这就意味着他的号码幸运中得了二等奖。
  一番小激动,王先生静下心来,想了一想,“真是可惜,要是最后1个开奖号码不是9,而是3,那该是一件多么完美的喜事。”两天后,王先生带着中奖彩票,前往邢台体彩中心办理了领奖手续。他说这是他购彩多年来,第一次上邢台体彩中心领取大奖,期待了好多年,终于实现了上市中心领奖金的梦想。他笑着说,将一如既往的追号购买大盘游戏。期待下次再来领奖时,奖金能更多些。(邢台 陈虎)
河北体彩微信,定期送好礼,开奖早知道
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34992元的复式假设中一等,二等可能各有3个
中了大奖就是硬道理,管它哪种方式
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出门在外也不愁一个手机号码发了一个彩信给我说我在淘宝网购物的时候被后台选为十一周年感恩大回馈,中了二等奖,可信吗_百度知道
一个手机号码发了一个彩信给我说我在淘宝网购物的时候被后台选为十一周年感恩大回馈,中了二等奖,可信吗
一个手机号码发了一个彩信给我说我在淘宝网购物的时候被后台选为十一周年感恩大回馈,中了二等奖,可信吗,有人中过这种奖吗
我有更好的答案
假的,别信
直接不能信
不要理 果断删除~骗子无疑~
忽略,骗子,
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