the answer is 13860 ( i can't seem to wrap my head around it bc i've tried everything and i still don't get the answer. thank u for trying anyway! perm and comb is so harddWhat's the answer? I haven't done perms and combs in a while but my guess is (12C6)5!*(6C4)3!*(2C2)1! = 9979200.
hey!!! thank you SO much! this makes sm sense to me now, and thank you so much for the picture above. it really clarified it for me. hope u have a great rest of ur dayView attachment 30620
this is in my y11 notes haha
in this case we would have
as seen in the last formula
hope this helps!
thank you very much!! i just tried it this way and it makes a lot of senseDo it sequentially:
- There are ways to select 12 people to form the table of 6
- Once those 6 are selected there are 6 left so there are ways to select 6 people to form the table of 4
- Once those 4 are selected there are 2 left so there is way to form the table of 2
As these events occur simultaneously, the product of these gives your answer. You’ll get the same answer regardless of which table you start with first.