combinations ext math question (1 Viewer)
- Thread starter qwerla
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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 hardd
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- Feb 16, 2005
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- HSC
- 2006
Do 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.
- There are
- Once those 6 are selected there are 6 left so there are
- Once those 4 are selected there are 2 left so there is
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.
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!!Do it sequentially:
- There are
- Once those 6 are selected there are 6 left so there are
- Once those 4 are selected there are 2 left so there is
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.
i just tried it this way and it makes a lot of sense