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Statistics and Probability Videos 134 videos
Statistics, Data, and Probability I: Drill Set 3, Problem 4. How many different avatars can be created based on the given options?
Statistics, Data, and Probability II Drill 3 Problem 2. Which two sports together make up for the preferences of more than half of all those w...
Counting Principle 1118 Views
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Description:
It's important to have principles. “No stealing” and “not letting anyone infringe on your inalienable rights” are good ones, but we're partial to the counting principle.
Transcript
- 00:04
Counting Principle, a la Shmoop. Dagun-Ra, Lord High Chancellor of the Volcano
- 00:12
people, is in a pickle.
- 00:16
It is Dagun-Ra's duty to choose those who will be sacrificed to Mount Lascivious.
- 00:23
But he's so bad at making decisions. He must choose to sacrifice one of the town's
- 00:34
goats, Alfred, Bobo or Chewy…
Full Transcript
- 00:40
…one of the town's donkeys, Darius, Eeyore or Fartsy…
- 00:48
…and one of the town's lawyers, Geoff, Harper, Irving or Jarvis.
- 00:56
He briefly considers just tossing in all of the lawyers, but he doesn't want to upset
- 01:08
the Volcano god. How many different combinations does Dagun-Ra
- 01:13
have to choose from?
- 01:15
Here are your options: First things first - we need to count up the
- 01:23
number of options for each category.
- 01:26
Looks like we're working with three goats…
- 01:28
…three donkeys…
- 01:29
…and four lawyers. To find the total number of combinations,
- 01:33
we would simply multiply those three numbers together.
- 01:36
Three times three times four equals… 36. Answer "E."
- 01:50
It takes him a while, but Dagun-Ra finally narrows his list of 36 possibilities down
- 02:23
to one.
- 02:26
Into the volcano go Chewy, Fartsy and Jarvis.
- 02:31
For at least another year, the volcano should have no further need for animal or human sacrifice.
- 02:45
Or for free legal advice.
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