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/sci/ - Science & Math

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>> No.4223609 [View]
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4223609

>> No.4174955 [View]
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4174955

>>4174939

>> No.3998214 [View]
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3998214

http://www.usatoday.com/news/nation/story/2011-11-04/texas-beating-video/51067340/1?csp=34news

>During an interview with her mother Thursday on NBC's Today show, Hillary Adams said her father regularly beat her for a period of time. has repeatedly said she didn't post the clip to spite her father, and that she hopes it forces him to seek help.

>Her mother blamed her ex-husband's bouts of violence on an "addition." She called it a "family secret," but declined to elaborate.

Friends dont let friends do math

>> No.3006843 [View]
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3006843

Is it possible to learn vocabs or someting like this by recording your voice and playing it while sleeping?

>> No.2653035 [View]
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2653035

Could use some halp with probability.

95% of switches made by a workshop function correctly.
The switches are packed into boxes of 20, one box is chosen at random.

1.) Calculate the probability that all the switches in this box function correctly.

So I do 20c0 x 95^0 x 5 ^20 ?

2.) What is the probability that at least 18 of the switches in the box function correctly. - How do I do it?

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