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I need someone that understands combinatorial calculus to help

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Thread replies: 3
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Anonymous
2017-06-03 06:58:29 Post No. 8954518
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Anonymous 2017-06-03 06:58:29 Post No. 8954518 [Report]

I need someone that understands combinatorial calculus to help me. I can't understand why I'm wrong. The situation is the following

The prime minister will be represented by three of his seven assistants on some event.
Person A, person B and person C are some of his 7 assistants.
What's the probability of persons ABC being chosen to represent the prime minister?

My resolution is

3C3/7C3

The answer is 1/7

I don't get it

Anonymous 2017-06-03 10:06:02 Post No.8955022
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Anonymous 2017-06-03 10:06:02 Post No.8955022 [Report]

>>8954518
kek~

Anonymous 2017-06-03 10:59:35 Post No.8955155
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Anonymous 2017-06-03 10:59:35 Post No.8955155 [Report]

I'm sure the answer should be 1/35

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I need someone that understands combinatorial calculus to help

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible. Read more on this topic here - https://archived.moe/talk/thread/1694/

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible.
Read more on this topic here - https://archived.moe/talk/thread/1694/