c*******g
发帖数: 151 | 1 小孩做GT三年级的数学题,答案和老师的不一样.
小孩选B,老师说是C,小孩丢分.
老师的解释: "For the question, you do not know what you will get when you
take out a ball. So you have to think of the worst case scenario so to
guarantee the result. Your scenario is not the worst."
我的答复给老师:
From the question itself, it says ""what is the least number of gumballs....
..". "Least" from Webster's 1913 Dictionary is defined as "Smallest, either
in size or degree". Since we all know 13 is less than 16, then 13 should be
the correct answer.If base... 阅读全帖 |
|
j**f
发帖数: 7403 | 2 C: 16
小孩做GT三年级的数学题,答案和老师的不一样.
小孩选B,老师说是C,小孩丢分.
老师的解释: "For the question, you do not know what you will get when you
take out a ball. So you have to think of the worst case scenario so to
guarantee the result. Your scenario is not the worst."
我的答复给老师:
From the question itself, it says ""what is the least number of gumballs....
..". "Least" from Webster's 1913 Dictionary is defined as "Smallest, either
in size or degree". Since we all know 13 is less than 16, then 13 should be
the correct answer.... 阅读全帖 |
|
k*****u
发帖数: 1313 | 3 C
你的理解有问题，就是简单的抽屉原理。倒是应该看看你孩子对B的解释，也许有些意
思。
小孩做GT三年级的数学题,答案和老师的不一样.
小孩选B,老师说是C,小孩丢分.
老师的解释: "For the question, you do not know what you will get when you
take out a ball. So you have to think of the worst case scenario so to
guarantee the result. Your scenario is not the worst."
我的答复给老师:
From the question itself, it says ""what is the least number of gumballs....
..". "Least" from Webster's 1913 Dictionary is defined as "Smallest, either
in size or degree". Since we all know 13 is less than 16,... 阅读全帖 |
|
c*******g
发帖数: 151 | 4 小孩做GT三年级的数学题,答案和老师的不一样.
小孩选B,老师说是C,小孩丢分.
老师的解释: "For the question, you do not know what you will get when you
take out a ball. So you have to think of the worst case scenario so to
guarantee the result. Your scenario is not the worst."
我的答复给老师:
From the question itself, it says ""what is the least number of gumballs....
..". "Least" from Webster's 1913 Dictionary is defined as "Smallest, either
in size or degree".
Since we all know 13 is less than 16, then 13 should be the correct answer.
If bas... 阅读全帖 |
|
q**x
发帖数: 1636 | 5 【 以下文字转载自 Parenting 讨论区 】
发信人: cicixiong (熊宝宝), 信区: Parenting
标 题: 小孩做GT三年级的数学题,答案和老师的不一样.
发信站: BBS 未名空间站 (Mon Feb 28 23:26:46 2011, 美东)
小孩做GT三年级的数学题,答案和老师的不一样.
小孩选B,老师说是C,小孩丢分.
老师的解释: "For the question, you do not know what you will get when you
take out a ball. So you have to think of the worst case scenario so to
guarantee the result. Your scenario is not the worst."
我的答复给老师:
From the question itself, it says ""what is the least number of gumballs....
..". "Least" from Webster's 1913 Diction... 阅读全帖 |
|
j********0
发帖数: 540 | 6 【 以下文字转载自 Joke 讨论区 】
发信人: quix (uglyDuck), 信区: Joke
标 题: 小孩做GT三年级的数学题,答案和老师的不一样. (转载)
发信站: BBS 未名空间站 (Tue Mar 1 17:19:54 2011, 美东)
发信人: cicixiong (熊宝宝), 信区: Parenting
标 题: 小孩做GT三年级的数学题,答案和老师的不一样.
发信站: BBS 未名空间站 (Mon Feb 28 23:26:46 2011, 美东)
小孩做GT三年级的数学题,答案和老师的不一样.
小孩选B,老师说是C,小孩丢分.
老师的解释: "For the question, you do not know what you will get when you
take out a ball. So you have to think of the worst case scenario so to
guarantee the result. Your scenario is not the worst."
我的答复给老师:
From the q... 阅读全帖 |
|
z*s
发帖数: 1695 | 7 【 以下文字转载自 Parenting 讨论区 】
发信人: cicixiong (熊宝宝), 信区: Parenting
标 题: 小孩做GT三年级的数学题,答案和老师的不一样.
发信站: BBS 未名空间站 (Mon Feb 28 23:26:46 2011, 美东)
小孩做GT三年级的数学题,答案和老师的不一样.
小孩选B,老师说是C,小孩丢分.
老师的解释: "For the question, you do not know what you will get when you
take out a ball. So you have to think of the worst case scenario so to
guarantee the result. Your scenario is not the worst."
我的答复给老师:
From the question itself, it says ""what is the least number of gumballs....
..". "Least" from Webster's 1913 Diction... 阅读全帖 |
|
r********n
发帖数: 6979 | 8 之前pplulu已经推荐了Tube了
http://www.mitbbs.com/article_t/Fishing/31664979.html
我就来具体说说我用的tube组合的优缺点吧
我现在最常用的tube是Gitzit 3.5" fat tube watermelon/green
加上Gumball Jig Head 1/8Oz Unpainted
无论在河边, 池塘里, 大坝下都是上bass的利器
其实Gitzit的tube不能算非常结实
那层橡皮比大多数的tube都要薄
被大鱼咬个2-3次很可能就开口报废了
不过如果是在大坝底下
因为石头,树枝,鱼线太多
很容易挂地球
基本都是在报废之前就被挂走了
还好价钱不贵
算是性价比比较高的了
这个组合的优点:
1, bass爱吃, 我的19"以上的大嘴小嘴都是用gitzit tube上
2, presentation也很容易, 无论是水底缓慢拖行, 还是水中匀速拉回, 还是垂直抖动
都有咬钩. 我爸妈基本只用tube或者crankbait. 用牲口什么的, 对于presentation和
set hook的要求要高不少.
3, 基本... 阅读全帖 |
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I*****y
发帖数: 854 | 9 "John has 20 gumballs in a bag. He knows there are 8 red, 7 white, and 5
green. If John can only pick the gumballs in the bag without looking, what
is the least number of gumballs he must pick from the bag to be sure of
getting one of each color?"
有歧意吧．问题是起码要摸几次才能保证所有颜色都摸到.
(B)是说如果前两次把白,绿球都摸到了,那第十三次就能保证了.是conditional的.低于
13次的,都无法保证.
(C)是unconditional的.
C肯定是对的．但B也未必错，理解不同而已.
..
either
be |
|
I*****y
发帖数: 854 | 10 "John has 20 gumballs in a bag. He knows there are 8 red, 7 white, and 5
green. If John can only pick the gumballs in the bag without looking, what
is the least number of gumballs he must pick from the bag to be sure of
getting one of each color?"
有歧意吧．问题是起码要摸几次才能保证所有颜色都摸到.
(B)是说如果前两次把白,绿球都摸到了,那第十三次就能保证了.是conditional的.低于
13次的,都无法保证.
(C)是unconditional的.
C肯定是对的．但B也未必错，理解不同而已. |
|
I*****y
发帖数: 854 | 11 这样吧,哪位有空看看下面的翻译有什么问题,我再看看到底错在哪儿
John has 20 gumballs in a bag. He knows there are 8 red, 7 white, and 5
green. If John can only pick the gumballs in the bag without looking, what
is the least number of gumballs he must pick from the bag to be sure of
getting one of each color?
John有一袋共20个球.他知道里面有8个红球,7个白球,5个绿球.如果John只能不看而直
接从袋子里面摸球,那么他最少必须从袋中摸出多少个球后才能确保每种颜色的球都摸
到? |
|
H********o
发帖数: 3625 | 12 这么讲的话，应该是A。三个球。
From the question itself, it says ""what is the least number of gumballs....
..". "Least" from Webster's 1913 Dictionary is defined as "Smallest, either
in size or degree". Since we all know 13 is less than 16, then 13 should be
the correct answer.If based on your logic "have to think of the worst case
scenario so to
guarantee the result", then 16 is the answer to question "what is the most
number of gumballs" John has to pick to be sure of getting one of each color
. |
|
l*x
发帖数: 891 | 13 提到这次波士顿爆炸案，就不得不提去年12月15日发生的桑迪•胡克小学（Sandy
Hook Elementary）枪击案。有许多证据怀疑此次枪击案的真实性，背后主谋也是美国
政府。有兴趣的朋友可以看看以下这个视屏：The Sandy Hook Shooting - Fully
Exposed
http://www.youtube.com/watch?v=Wx9GxXYKx_8&bpctr=1366250790
上段录像中最搞笑的莫过于一个“死者”的“父亲”，Robby Parker，在记者发布会上
没有意识到镜头在拍摄自己，满面春风地和旁人聊天开玩笑（08:10开始），然后笑逐
颜开的施施然走到镜头前，一口深呼吸，脸色瞬间变得深沉而悲痛，开始了一长段伤感
的演讲。今年的奥斯卡最佳男主角非他莫属了。
可惜女主角演砸了。救了15个小学生的“犹太英雄女老师”Kaitlin Roig在ABC News的
采访中，虽然竭尽全力表现悲痛，嘴巴眼睛鼻子挤了又挤，愣是没挤下一滴眼泪，只是
象征性的在自己干巴巴的眼角处擦了又擦（从06:00开始）：The Sandy Hook Actors
... 阅读全帖 |
|
t**********8
发帖数: 1683 | 14 本土恐怖分子更危险 恐怖活动是为了推动禁枪案
文章来源: 世界新闻网 于 2013-04-18 08:09:26 - 新闻取自各大新闻媒体，新闻内容
并不代表本网立场！
打印本新闻 (被阅读 20024次) 2
「福斯新闻」对全美选民进行的民调显示，美国民众对波士顿马拉松大赛遭到炸弹攻
击，愤怒多于恐惧，并相信作案者迟早会落网。而且美国东北部居民担心遭到攻击，会
因此改变生活习惯的比率也比西部居民高。
58%的人对爆炸案表示愤怒，比感到忧心的人(27%)多出一倍以上，79%的人相信政
府会逮到炸弹客。
62%的人认为这个事件很可能是国内恐怖分子干的，只有20%认为可能是伊斯兰恐怖
分子的「杰作」。
51%的人认为像奥克拉荷马市炸弹案兇手麦克维(Timothy McVeigh)这种本土恐怖分
子，对美国构成的威胁较大，只有26%的人认为伊斯兰恐怖分子构成的威胁较大。
34%的人担心当地发生恐怖攻击，65%的人没有这种顾虑。东北部民众有42%担心发
生这种事情，西部民众这种比率最低，只有25%。
69%的人认为当地有关当局对应付恐怖攻击已有准备。81%的人宣称炸弹案不会改变
他们的日常... 阅读全帖 |
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b***6
发帖数: 6011 | 15 40岁前的人生目标啊
一般人光住旅店也破产了吧，都是5 star啊 |
|
x*b
发帖数: 5723 | 16 The entry fee varies each year depending on the route, for example in 2008
the entry fee was $120,000 per car, with the route that started in San
Francisco and finished in Beijing, including flying all 120 cars around the
world. However, in 2009, the entry fee is reduced to $44,000 per car for two
people, as the route is contained within the United States. |
|
k**x
发帖数: 2611 | 17 It is possible but not by average WSN.
"Alexander Roy (born November 23, 1971) is an American rally race driver who
has won the Spirit of Gumball trophy and in 2006 set a transcontinental
driving record across the United States in 31 hours, 4 minutes." " from New
York City to Los Angeles".
"On this, the successful 31:04 run Roy claims 2,794 mapped miles and 2800
road miles - which he covered at an average speed of 90.1 mph."
http://en.wikipedia.org/wiki/Alex_Roy |
|
g******e
发帖数: 94 | 18 Free used baby stuff give away, pickup only [zip 07302]
I could leave the items at my building's concierge desk, which is 24/7.
Please PM me the items you want and roughly when you are going to pick it up.
Fisher-Price Space Saver High Chair,
Vetch move and crawl ball,
Fisher-Price crawl along snail,
Fisher-Price Gumball Machine,
NEW similac baby bottle,
NEW mother's milk tea. (exp Dec 2015) |
|
B*M
发帖数: 1340 | 19 您老全家就没有念理科出来的？
gumballs....
either
be
case |
|
f**********g
发帖数: 107 | 20 这个当然是C.
这个问题这样改一下就有意思了：
"what is the average number of gumballs he must pick from the bag to get one
of each color?"
这样就考了conditional expectation, geometric distribution等，非常适用于小朋
友。 |
|
S*****s
发帖数: 2290 | 21 C~
gumballs....
either
be
case |
|
d*******u
发帖数: 1181 | 22 【 以下文字转载自 Military 讨论区 】
发信人: ljx (LJX), 信区: Military
标 题: 波士顿才爆，德州又爆，深度分析！
发信站: BBS 未名空间站 (Wed Apr 17 19:26:50 2013, 美东)
提到这次波士顿爆炸案，就不得不提去年12月15日发生的桑迪•胡克小学（Sandy
Hook Elementary）枪击案。有许多证据怀疑此次枪击案的真实性，背后主谋也是美国
政府。有兴趣的朋友可以看看以下这个视屏：The Sandy Hook Shooting - Fully
Exposed
http://www.youtube.com/watch?v=Wx9GxXYKx_8&bpctr=1366250790
上段录像中最搞笑的莫过于一个“死者”的“父亲”，Robby Parker，在记者发布会上
没有意识到镜头在拍摄自己，满面春风地和旁人聊天开玩笑（08:10开始），然后笑逐
颜开的施施然走到镜头前，一口深呼吸，脸色瞬间变得深沉而悲痛，开始了一长段伤感
的演讲。今年的奥斯卡最佳男主角非他莫属了。
可惜女主角演砸了。救了15个小学生... 阅读全帖 |
|
c*******g
发帖数: 151 | 23 谢谢鸭子,那我要是开始5个都是绿的,然后7个都是白的,第十三个是不是红的呀?
要保证三色都有, 那"the least number of gumballs to pick" ,是不是13个呀?
欢迎大家指点,谢谢. |
|
