FACTORIALS and PERMUTATIONS - DISCRETE MATHEMATICS
HTML-код
- Опубликовано: 30 сен 2024
- Today we introduce factorials, permutations, and permutations without repetition. We also do a few practice problems.
LIKE AND SHARE THE VIDEO IF IT HELPED!
Support me on Patreon: bit.ly/2EUdAl3
Visit our website: TrevTutor.com
Subscribe on RUclips: bit.ly/1vWiRxW
-Playlists-
Discrete Mathematics 1: • Discrete Math (Sets, L...
Discrete Mathematics 2: • Discrete Math (Countin...
-Recommended Textbooks-
Discrete and Combinatorial Mathematics (Grimaldi): amzn.to/2T0iC53
Discrete Mathematics (Johnsonbaugh): amzn.to/2Hh7H41
Discrete Mathematics and Its Applications (Rosen): amzn.to/3lUgrMI
Book of Proof (Hammack): amzn.to/35eEbVg
Like us on Facebook: on. 1vWwDRc
Hello, welcome to TheTrevTutor. I'm here to help you learn your college courses in an easy, efficient manner. If you like what you see, feel free to subscribe and follow me for updates. If you have any questions, leave them below. I try to answer as many questions as possible. If something isn't quite clear or needs more explanation, I can easily make additional videos to satisfy your need for knowledge and understanding.
![[Discrete Mathematics] Permutation Practice](http://i.ytimg.com/vi/aqTzHOvabYM/mqdefault.jpg)
![[Discrete Mathematics] Permutation Practice](/img/tr.png)
This channel is like an Easter egg waiting to be discovered , thanks a lot. For the first time I enjoyed learning math , this guy deserves a medal.
The fact that I am replying so close to Easter .This might just be Easter egg
I've taken many STATS, MATH, DISCRETE STRUCTURES courses throughout university and I can say without doubt you are the only person that could explain such a fundamental concept like permutations so flawlessly. You're the best.
AGREE
Lecture is boring lol I love going on my own pace.
this is a high school material though!
... Did i actually understand it? No wait I did understand it.
*the teacher in our university never explained it this good*
This is amazing. Learning this stuff feels almost like learning a magic trick. Thanks alot!
You are really a good teacher
You make discrete maths seem much more intuitive than it previously did for a calculus oriented person like me. Keep up the good work Trev!
Im studying Computer Science at univeristy. My professor said: search "x" book in the library, copy notes, and do assignments... that's all he's really done. You make this topic so much easier to understand than a 4 inch thick book can!
This is actually amazing. Sometimes I feel stupid because I can't understand my university professor and then I find something like this that I can understand perfectly! So frustrating!
You're the man Trev!!
Anyone else think his name was "TrevTheTutor" not "TheTrevTutor" this whole time
never thought bout that tho
stop watching Peppa pig
8:34 he's speaking chinese
Holy moly, how is it that a teacher that lectures for an hour, makes it so hard to understand anything, but you are able to make me understand it in 15 minutes?! Thank you so much for these videos!!
maybe you should focus more on the lesson and not the exposed thighs of the chick sitting next to you
I just want to take a momment and appreciate you and your videos. These videos have helped me a lot with my discrete math unit at uni. Thank you!
thank you my brother
life saving knowledge
super helpful video, respect!😎
@@hexodian yes bro especially in this moment of crisis
Wow I love ur videos soo much. Thanks for the magical trick 😁
how.....how am i understanding this after paying so much to my collage and not understanding anything why are you so good at teaching sir im subbing to you and thank you for spreading your knowledge.
Thank you so much for you videos. They’ve been a massive help in my understanding discrete math while I have to learn online due to COVID-19
im learning more during covid rather than wasting my time at school
@@II_xD_II same HAHA.
so clearly explained, thank you
Loved the path finding example. This could be a much faster solution than backtracking(given the same constraints) for programming problems.
Yeah you are right, 👍🏻
i thought the same
11:00 a parabolic SAR Indicator above "MISSISSIPPI"
You and Khan are really awesome at teaching such things in a truly intuitive way. That's what missing in university.
im subscribed to both of them
This is the best method I have seen. Thank you so much
Though I used permutations a lot, I really haven't understood the logic behind this till now. (Rule of Product -> Permutations)
I'm taking remedial Algebra 1 and 2 in community college right now and this is fascinating to me.
when we did that in R^3 anything change? example (0,0,0) to (8,10,12)?
Trev you made me think was this so easy.Great explanation.
Why we multiply 4factorial and 3factorial . Why not we use add
Holy, I did not expect to be able to understand a maths video without having to repeat the video
i've had less than four math 12 classes and we're already discussing permutations and factorials. it remains yet to be seen whether i'll survive the year lol
Flawless explanation. I wish all tutors could explain like this.
Did he just pronounce ERR as AIR?
Brooo u just made me understand everything within 15 mins damnnn
Thank you, I would have been lost without these clear and well-communicated simple explanations. My professor just reads out proofs, without actually explaining them in such simple terms.
A lucky number is a 10-based number, which has at least a "6" or an "8" in its digits. However, if it has "6" and "8" at the same time, then the number is NOT lucky. For example, "16", "38", "666" are lucky numbers, while "234" , "687" are not.
Now we want to know how many lucky numbers (without leading zeroes) are there between L and R, inclusive?
Legend is back.
So just to understand the path finding problem, you find the permutations of the string representing the movements, but then you use the division rule to divide by the number of ways, or paths, that are equivalent. What you're dividing by is a result of the product rule which implies that if I have n! ways of rearranging the right movements and m! ways of rearranging the down movements, then I have n! * m! total ways of rearranging the string and it being equivalent?
These videos💎💍🎩👑
Good to see you back
your request was so hard that I left a comment without any reason lol
the last example was freaakin awesome !!!
thank you
On the question What if the first three numbers in the list must be even? Isn't the answer 3x2x1(assuming there are no repeating) x 7x6x5x4(it's never said that the other elements cannot be even).
There is the restriction from the first condition that the elements can not be repeated.
You made it very simple thank you so much
these videos are very well done
Video series on software verification?
So helpful. Thanks a lot.
nice efferts
You should re-think your verbiage. You never have "one choice." If you need one, and there is only one, you have no "choices." Eventually you're going to stop writing the "x 1" anyway (because it doesn't change the value), you should probably do it almost immediately, not just for brevity, but because it represents a real-world situation.
I play many card games, and I find it endlessly funny when, at the last round of a game in which everyone is holding only their final card and they are obligated to play, how often a perfectly intelligent person will take a long look at their final card, deciding which one to play. I do it myself once in awhile.
I dont even understand at all
I'm in PAIN
Yes