THANK YOU! I am studying for the CLEP exam and the other sites I have found are so confusing and drawn out! You are straight to the point and easy to follow with the steps and rational you provide!!!!
Bravo Mr. Tecmath. you should publish books on these matters and they should be mandatory for school curriculum . Your examples take the fear out of mathematics.
Thank you. I understand basic math. But, this is a bit more advanced for me. God bless you sir. You are a great math teacher. Your videos help me get me through some difficult times in my life right now until I get them straightened out. Hopefully will be practicing them with my scientific calculator on my laptop.
Thank you , thank you!! You have now helped me overcome the fear of permutations and combinations. I always loved the other maths like geometry, trigs, mechanics and calculus but when I had to deal with stats I had a some fear. Thanks again!
Thank you very much, you have seriously helped out dramatically, I was afraid I would fail my test, but just like always, some dude on youtube who sounds like Bruce the shark from Finding Nemo always helps me more than my own school's lessons
Glad I found this, I didn't know how to ask for this lol so I couldn't find it for a long time! I was sure there was a short cut but I couldn't find it from my stats text book. They really want you to do it the long way.
I appreciate you for making videos to help us and it is so helpful to me bc of how many number and types of questions there are and your explanation. my intension here is to clarify some stuff for those who didnt get this vid contents (for those who watched this as 1st video to help them understand) I have watched and understood some of the very important concepts and then I watched this video so I could understand but some who watched this as beginning videos for practicing understanding the concept may not get the meaning/theory behind it. 5C3 = 5!/[(5-3)!(3!)] = 5 x 4 x 3 x 2 x 1 /2 x 1 x 3 x 2 x 1 = 10 5C3, or 5 choose 3, is *5*: number of total items to choose *from* and *3*: the number of items to *choose*. Meaning.... nCr = n: total number of items to choose from, r: the number of items to choose. back to (n-r)! is divided from total number of items to choose from because we are *not taking those items in to account*. r! is also divided because items to choose, themselves, have number of ways to arrange(since if it was 5!, which is permutation, it means all items are DISTINCT so the order matters and no need to cut down the number of ways to arrange those items; there is no overlap). Here is the part I wanted to clarify: the next moment he was calculating 10C4 = (10 x 9 x 8 x 7)/ (4 x 3 x 2 x 1). Why and how? This is because in ANY case where you come up with answer nCr, the whole calculation reduces to be (n, decreasing each time by 1 when it is multiplied, times the number of items selected / n!) when you feel comfortable in calculating nCr is a tip...... 5C3 is SAME as 5C2. you can check with any number as long as it follows the rule I stated in previous paragraph. (5 x 4 x 3)/(3 x 2 x 1) = (3 cancels, 4 is reduced) 2 is the answer. You'll see the pattern once you try both the way to do this is when your answer is 8C6, you just have to change the number r with (n-r) so it'd be 8C2 in this case. Much faster and efficient to calculate. disclaimer: as I am one who is still learning there maybe some mistake or unclear parts but I am confident enough to say above and tips. This is not meant to disrespect or so; just trying to add something to this vid since I honestly think this video was very helpful to me. I struggled so much when I first learned this so that's why I want to help
What about combination, which involves letters as well? For example 2-9 and A-Z ? (26 letters in the alphabet) but the string is limited to 12 - so 12 spaces, mixed with letters and numbers.
How do you find permutation but if there are for example 10 numbers and out of them 4 numbers but the repetition is possible. The same number could repeat more than one time
Q: So if I got my answer but I only gave a partner the factorial of 9! / 6! 3! how would they find out the answer? They'd just say n is clearly 9 and r is clearly 3 so then they'd work out, like you did, that there's 84 combinations and check it by n-r?
What about if we are required to have a combination of 3 letters with 4 numbers? Like these : ABC 1234; BBC 4351; SSS 6666, etc. Condition 1: Numbers and letters may be repeated; Condition 2 : Numbers and letters may not be repeated. Numbers can be picked from 0 to 9 (10 numbers) and letters can be picked from A to Z (26 letters). Thanks in advance.
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Man sounds Bruce the shark from Finding Nemo
J L oh yea
Where are you from ...my one of the friend look like you ...
That's why we all are here (explaination : no one care about maths )
@@user-kj6pi3zr5q I care…
Thats rude
how could anybody dislike this amazingly compassionate and clear presentation
Jealous perhaps 🤣😅
It might just be a misclick
they were holding their phone upside down
This is way easier than what I was taught in school!
MTMFan you are still a baby
Hehe
i had a really good teacher and still agree
OMG! I'm studying for the GRE, and this is something I never learned... THANK YOU FROM THE BOTTOM OF MY HEART!!!
THANK YOU! I am studying for the CLEP exam and the other sites I have found are so confusing and drawn out! You are straight to the point and easy to follow with the steps and rational you provide!!!!
460 views, 46 likes and 0 dislikes... I love how perfect the numbers are
Now its 570 virws and 57 likes
590 views, 59 likes 0 dislikes... What is this sorcery?
670 views, 67 likes and 0 dislikes
WazzupKMS now it's 790 views 79 likes and 0 dislike
I am for sure going to murder anyone who breaks the pattern
This made computer programming functions so much less complicated than what computer science circles Ex15b made it seem. Tysm
Dude totally agree man, this guy is such a genius
Bravo Mr. Tecmath. you should publish books on these matters and they should be mandatory for school curriculum . Your examples take the fear out of mathematics.
Way easier than what I’m being taught now. Thank you!
Much better than some of the complicated videos watched. Thanks mate.
Incredibly clear. You make it easy to digest and it seems so obvious once I grasped it.
Thank you. I understand basic math. But, this is a bit more advanced for me. God bless you sir. You are a great math teacher. Your videos help me get me through some difficult times in my life right now until I get them straightened out. Hopefully will be practicing them with my scientific calculator on my laptop.
Thank you , thank you!! You have now helped me overcome the fear of permutations and combinations. I always loved the other maths like geometry, trigs, mechanics and calculus but when I had to deal with stats I had a some fear. Thanks again!
THANK YOU! 🙏 I just went through 5 videos and 2 books trying to figure this out.
explained way better than my teachers. Thank you. I swear, school makes it out to be harder than it ACTUALLY is.
Thank you very much, you have seriously helped out dramatically, I was afraid I would fail my test, but just like always, some dude on youtube who sounds like Bruce the shark from Finding Nemo always helps me more than my own school's lessons
Your explanation made things sooooo much easier! Thank you!
Thank you mate !!!
Finally understand it
Thank you so much for your excellent and simple explanation - I just couldn’t wrap my head around this problem on my own.
I've been going over and over this and thanks to tou I finally understand, Thank You...
This is much easier than making a chart thank you!!
Finally, a video I could understand to help make things easier. Many thanks!
This video really really helped, I was so confused and now I feel really confident about my exam!
Omg thanks alot😄. My school has scantron coming soon and these are the only questions that confused me😂. You really helped me lol
This was by far the best explanation I could understand. Thank you!
Thanks for making a tricky subject a little easier to understand Josh.
thank you sir From the bottom of my heart and top of my head
I don’t know how can I say thank you professor ❤️ ❤️ I appreciate you so much
great teacher. you made it super easy
Ok. i understand this explanation. So, good job.
Very intuitive explanation. Great video.
Insanly interesting and simple way you explained this concept! I would still be trying to remember the formula if it wasn't for you!
wow- you summed that up perfectly! THANK YOU
Thanks for the lesson!
better than my professor, thank you soooo much!!!!!
Legit😂😂
thank you so much for this .
OMG thank you so much my GED prep book told me that I had to write out EVERY combination???
your a legend mate respond because you made me get 92 in maths for fraction all from the help of you
Glad I found this, I didn't know how to ask for this lol so I couldn't find it for a long time! I was sure there was a short cut but I couldn't find it from my stats text book. They really want you to do it the long way.
you are so much better at explaining than my teacher.
So good! Thank you so much!!
OMG thank you so much. I could learn from you all day long. You make combinations so much easier.
u saved my grade thank u so much
Bro I love you so much you just made my day easy
thank you it really helped me .
Thanks
thank you so much I understand this now!!!
dude this guys a genius
Thank you!
THANK YOU SO MUCH!!!
TYSM! finally I know how it works
Thank you
Thanks really helpful
Sup, I love your vids.
Thank you so easy
THANK YOU MAGIC MAN
THANK YOU
THANK YOU SO MUCH
most relaxed guy ever
Thank you bruh
Thank you sm 🤩🥺❤️
thankyou so much.
thank you bro
Way easy thank you
thanks so much man
Ok good explanation
Thank you so so much for this video it helps me a lot but I didn't get the last part where did you get the 3!5!?
Nice.
In just under 9 minutes I went from having no f*ckin clue what I was doing to being able to solve these questions no problem.
THANKS
Yay now i understand it!
Aghhhh thank you thank you I didn’t understand the formula just wanted to know what it meant
I love you man
Thank You!!!!!!!!
Tank u so much
thanks a lot :)
Good one
What if you want to select all the books?
bloody legend
Great accent sir!
wow thanks
this broke my brain in school but it seems so ridiculously easy now
Sir please can you teach time and work, AP - GP and calendar problems
I appreciate you for making videos to help us and it is so helpful to me bc of how many number and types of questions there are and your explanation.
my intension here is to clarify some stuff for those who didnt get this vid contents (for those who watched this as 1st video to help them understand)
I have watched and understood some of the very important concepts and then I watched this video so I could understand but some who watched this as beginning videos for practicing understanding the concept may not get the meaning/theory behind it.
5C3 = 5!/[(5-3)!(3!)] = 5 x 4 x 3 x 2 x 1 /2 x 1 x 3 x 2 x 1 = 10
5C3, or 5 choose 3, is *5*: number of total items to choose *from* and *3*: the number of items to *choose*. Meaning....
nCr = n: total number of items to choose from, r: the number of items to choose.
back to (n-r)! is divided from total number of items to choose from because we are *not taking those items in to account*. r! is also divided because items to choose, themselves, have number of ways to arrange(since if it was 5!, which is permutation, it means all items are DISTINCT so the order matters and no need to cut down the number of ways to arrange those items; there is no overlap).
Here is the part I wanted to clarify: the next moment he was calculating 10C4 = (10 x 9 x 8 x 7)/ (4 x 3 x 2 x 1). Why and how?
This is because in ANY case where you come up with answer nCr, the whole calculation reduces to be (n, decreasing each time by 1 when it is multiplied, times the number of items selected / n!)
when you feel comfortable in calculating nCr is a tip......
5C3 is SAME as 5C2. you can check with any number as long as it follows the rule I stated in previous paragraph.
(5 x 4 x 3)/(3 x 2 x 1) = (3 cancels, 4 is reduced) 2 is the answer. You'll see the pattern once you try both
the way to do this is when your answer is 8C6, you just have to change the number r with (n-r) so it'd be 8C2 in this case. Much faster and efficient to calculate.
disclaimer: as I am one who is still learning there maybe some mistake or unclear parts but I am confident enough to say above and tips. This is not meant to disrespect or so; just trying to add something to this vid since I honestly think this video was very helpful to me. I struggled so much when I first learned this so that's why I want to help
Thanks.
Nice video, very clearly explained, however you could've included combinations with repetition! Nevertheless, respect.
+cho_Oz thanks. Good luck on your exam tomorrow.
Bore
Hello, if an id has 8 numbers, how many can be made if the number can be repeated ?
And how many if it cant?
how can i calculate the amount of possible bets on the euro million, 5 from 1 to 50 and 2 from 1 to 12
Thnxso much
I
Don’t judge a book by its cover😂
What about combination, which involves letters as well? For example 2-9 and A-Z ? (26 letters in the alphabet) but the string is limited to 12 - so 12 spaces, mixed with letters and numbers.
One step closer to counting cards 😏
Nice ! It is ok if I take your idea and translate it in another language (a new video) and put it in my channel?
You have a big pot of oatmeal and a choice of 18 toppings. How many combinations?
nice
Let A be a set containing 2023 elements. How many ways are there to choose two subsets of A (not necessarily distinct) whose union equals the set A
How do you find permutation but if there are for example 10 numbers and out of them 4 numbers but the repetition is possible. The same number could repeat more than one time
If in people one particular person include how we will chose from that
Are you Australian? I love your pronunciation hahahhh
Anyway I love your videos
Love from Italy
WHY DONT WE IS LIFE
PaulNerrumo iD He sounds like Daren Lehman, the former Australia cricket coach
He sounds normal
...then again I am Australian
@@leizhang7255 lool, why did you say you are austrialian? isnt your name zhiang? i think you must be chinese. thats for sure.
3:18 Combinations Formula
Q: So if I got my answer but I only gave a partner the factorial of 9! / 6! 3! how would they find out the answer?
They'd just say n is clearly 9 and r is clearly 3 so then they'd work out, like you did, that there's 84 combinations and check it by n-r?
can you tell me how many combination there are if you use 1 and 0 for a 10 numbers password
What about if we are required to have a combination of 3 letters with 4 numbers? Like these : ABC 1234; BBC 4351; SSS 6666, etc. Condition 1: Numbers and letters may be repeated; Condition 2 : Numbers and letters may not be repeated. Numbers can be picked from 0 to 9 (10 numbers) and letters can be picked from A to Z (26 letters). Thanks in advance.
His accent feels like a cold glass of water on a hot humid summer day