10! - Numberphile
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Date: 2022-04-08
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Comments and reviews: 9
Monsoonjr99
Remember that seconds, minutes, hours, and weeks were invented by humans. We have a thing for highly composite numbers like 24 and 60, as well as prime numbers like 7. Not quite as coincidental anymore.
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Remember that seconds, minutes, hours, and weeks were invented by humans. We have a thing for highly composite numbers like 24 and 60, as well as prime numbers like 7. Not quite as coincidental anymore.
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Darth
you're a BAD matematician, because a day DOES NOT contains EXACTLY 24 hours. Or in Britain there are no leap days anymore? So the scientific and informational value of this video is minus eternity.
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you're a BAD matematician, because a day DOES NOT contains EXACTLY 24 hours. Or in Britain there are no leap days anymore? So the scientific and informational value of this video is minus eternity.
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Star
10! seconds is 42 days.
The smallest number divisible by all positive integers up to 10 seconds is 42 minutes.
What's it with 10, multiplication and time always having a connection to 42?
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10! seconds is 42 days.
The smallest number divisible by all positive integers up to 10 seconds is 42 minutes.
What's it with 10, multiplication and time always having a connection to 42?
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education
Frankly, I prefer this over Matt Parker's -approx. Pi-billion seconds in a century-. The exactness of 10! seconds in 6 weeks is what puts it over the edge for me
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Frankly, I prefer this over Matt Parker's -approx. Pi-billion seconds in a century-. The exactness of 10! seconds in 6 weeks is what puts it over the edge for me
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Jacob
To say it another way, if you have 10 objects and want to list every possible permutation, and can list them one per second, it will take you 6 weeks exactly.
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To say it another way, if you have 10 objects and want to list every possible permutation, and can list them one per second, it will take you 6 weeks exactly.
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Goryllo
Why is 1 included when multiplying numbers for a factorial instead of just stopping at 2? Is it because they're considered real numbers instead of integers?
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Why is 1 included when multiplying numbers for a factorial instead of just stopping at 2? Is it because they're considered real numbers instead of integers?
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Avital
I like how no one has mentioned that James has a games folder on his phone, I only recognize angry birds.
Does anyone else recognize a different one?
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I like how no one has mentioned that James has a games folder on his phone, I only recognize angry birds.
Does anyone else recognize a different one?
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adandap
Umm. failing to see why I care. This an artifact of arbitrary decisions to use a base of 60 for seconds and minutes, and having 7 days in a week.
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Umm. failing to see why I care. This an artifact of arbitrary decisions to use a base of 60 for seconds and minutes, and having 7 days in a week.
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Mark
Much fun! Sharing it on my blog. (But in his enthusiasm, about 1: 49 Dr. Grimes says -How many weeks is that? - instead of -How many days? -)
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Much fun! Sharing it on my blog. (But in his enthusiasm, about 1: 49 Dr. Grimes says -How many weeks is that? - instead of -How many days? -)
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