Permutations With Restrictions

This video shows how to calculate the number of permutations when there are restrictions on the arrangements.

[Qwwer]

Never knew that a 15min discussion would be better than listening to my prof for an hour..ty

[ttvurmom]

I’m using this to prepare myself for the Mathletes Competition on November 16. It’s only 32 days away. Thanks for the vid! May God bless you.

[sylvestermainoo]

Thanks so much. This was so helpful and your explanations were easy really easy to understand

[yona]

Thanks so much!! This helped me a lot plus your explanation is great!

[prabhatshuklaofficial]

I understood this concept very nicely sir.

[glebkozlovskiy]

isnt the first one su[posed to be 4 factorial?

[ironmason]

Hello! In 2C, why 5xP(7, 4)? I thought i should be P(7, 4)^5, (read as raise to 5). Thank you!

[danillejoycarcueva]

What if it says how will she be seated if they have to be seated one seat apart

[ToHereCan]

If you do P(6, 6) for 3b then why don't you do 2 x P(7, 4) for 2d by treating TH as a single object?

[souaadatwi]

In 3_b why we didnot multply by 6 for places

[arjo]

I understand it better than my math teacher...

[aimeeuwase]

On number one would it make a difference if the balls weren't identical

[Ulttleshjt]

P(6, 6) explaination could use some work

[manyaldwin]

I’m stupid I don’t know how you would get 6 in b

[kongking]

thank you sir
im about to take an difficult exam tomorrow

[saintyop]

other way for the first question: 7A6 / ( 4! * 3! )