Stripping all the mysteries in add maths. Making all you need is patience to master the subject. No secrets, no hiding, no tricks, no puzzles, no mental games, no ambiguity. Everything is explained clearly, with all the possibilities imaginable.
bro is straight to the point..know what he is teaching.....and actually makes the student understand....you just surpasses 95.993% of school addmath teacher
Since dad and mom must be together, we group them and count them as 1 person instead of 2, then add with the 4 children. So total is 5. And since this is a round table, we can't do 5!, we have to use (5-1)!. So (5-1)! will include the grouped parents (dad+mom) and the children, switching places with each other. But it doesn't include the dad and mom switching places with each other because we considered them as a group. Hence, we have to multiply 2! To include both dad and mom switching place. Hope this clarifies.
![[ADD MATHS] Form 5 Chapter 5 - Probability Distribution (Binomial) Part 1 | KSSM](http://i.ytimg.com/vi/XJMDHF2kojg/mqdefault.jpg)
Stripping all the mysteries in add maths. Making all you need is patience to master the subject. No secrets, no hiding, no tricks, no puzzles, no mental games, no ambiguity. Everything is explained clearly, with all the possibilities imaginable.
Thanks! Appreciate the comment! :)
bro is straight to the point..know what he is teaching.....and actually makes the student understand....you just surpasses 95.993% of school addmath teacher
95.993%? That's oddly specific. 😄 Thank you, my friend for the kind words! ✨
Thank you for making this easy to understand, you are doing a great job!
Thank you! 😊
59:15 for question (a), can we just put 12P5 since the arrangement matters?
Yes you can.
Thank you 🙏 bro u are a very good teacher
Thank you. 😊
57:02 sir why father and mother can switch their place and their children cant?
Since dad and mom must be together, we group them and count them as 1 person instead of 2, then add with the 4 children. So total is 5.
And since this is a round table, we can't do 5!, we have to use (5-1)!.
So (5-1)! will include the grouped parents (dad+mom) and the children, switching places with each other.
But it doesn't include the dad and mom switching places with each other because we considered them as a group.
Hence, we have to multiply 2! To include both dad and mom switching place.
Hope this clarifies.
i love youu!!!
Haha. Love you too.. ❤