2011 hsc mx1 marathon (1 Viewer)

[apollo1]

(i)

(ii)

wrong

 

[someth1ng]

wrong

How is it wrong? =/

EDIT: Is it 8C2 * 6C2 * 4C2 = 2520 ways? This method treats the BYE as a person but I don't see why the first one doesn't work thought...On second thought, it isn't this because a BYE can't be counted as the arrangement as it's not a player.
So the if Amy is not against ben = 2520 - 6C2 * 4C2 = 2430?

 

[K4M1N3]

^

i) 7C2*5C2*3C2 = 630

ii) 6C2*4C2*2 = 180

....?

 

[someth1ng]

i) 7C2*5C2*3C2 = 630

That's basically the same as my first method, I don't understand why it's wrong.

ii) 6C2*4C2*2 = 180

I don't understand this one though...

 

[K4M1N3]

apollo trolling?

I don't understand this one though...

Yeah neither do I....i guessed it by thinking: take one person out, then solve the arrangement as in (i), then do the same for the second person. I just realised that doesnt take into account the fact that each could play someone else at the same time.....my bad.

 

[apollo1]

im not trolling ill post the worked solution soon if no one else can get it.

 

[someth1ng]

I just realised that doesnt take into account the fact that each could play someone else at the same time.....my bad.

No idea what you're on about...

 

[3PiCFail]

I think some of your answers are not taking into account doubling up...
e.g if ben plays say, prue then prue playing ben would also be valid but a double up...

 

[someth1ng]

I think some of your answers are not taking into account doubling up...
e.g if ben plays say, prue then prue playing ben would also be valid but a double up...

I don't see how it does this though...=/

 

[barbernator]

i don't see why you guys are wasting your time with this question, there will not be a question like this in the test.

 

[apollo1]

heres the solution to that question.

the answer to part (ii) is 90 btw. i couldnt printscreen the bottom part.

 

[barbernator]

i was just having a look at the final part to the final question of the 2010 ext 1 paper, it has ridiculous wording. was there any repercussions about that question after the paper? because the wording is appaling

 

[artosis]

View attachment 23289

heres the solution to that question.

the answer to part (ii) is 90 btw. i couldnt printscreen the bottom part.

dude thats a 4u perms and comb question. why the hell are u posting this in the ext1 marathon
this is from the sceggs darlinghurst 2009 4u paper q6

seriously this thread is just becoming an ext2 marathon with easy-med ext2 questions

 

[bleakarcher]

^ guyz note the above lol

 

[hscishard]

dude thats a 4u perms and comb question. why the hell are u posting this in the ext1 marathon
this is from the sceggs darlinghurst 2009 4u paper q6

seriously this thread is just becoming an ext2 marathon with easy-med ext2 questions

Seems 3 unit to me

 

[someth1ng]

Seems 3 unit to me

You don't get this "removing the double pairs" stuff in 3U so we don't have stuff with /3! for example.

 

[abc123yoyo]

This is a bit irrelevant but how long should it take for 3u students to finish the 2u paper? It takes me about an hour to go from q.1-5 is that too long?

 

[apollo1]

This is a bit irrelevant but how long should it take for 3u students to finish the 2u paper? It takes me about an hour to go from q.1-5 is that too long?

that should be fine. depends on how much your aiming for. if you want 95+ you need to finish paper quicker and alleviate any mistakes.

 

[slyhunter]

This is a bit irrelevant but how long should it take for 3u students to finish the 2u paper? It takes me about an hour to go from q.1-5 is that too long?

That's pretty good.

 

[abc123yoyo]

but i am confused about how to allocate the rest of my time, another hour for Q. 6-9 n then 30 minutes for 10??