Australian Maths Competition 2012 Thoughts (3 Viewers)

[iBibah]

225 for Q29.

Sorry I meant 224 not 226.

Do you mind showing your working?

 

[twinklegal19]

Nope, I might scrape a HD depending on the cut-off.

That's definitely a HD right there

 

[Sy123]

Does anyone think I can scrape a D with my outcome?

 

[iBibah]

Does anyone think I can scrape a D with my outcome?

How did you go?

Also remember that it was hard for everyone so you can still get a D.

 

[twinklegal19]

Does anyone think I can scrape a D with my outcome?

If you get the first 20 questions or so right, you'll still get a D iirc

 

[4025808]

i think he would know how he went better than you lol

have some faith in your brother

LOL well he would do better than me, but from what he did I already pointed out some of the stuff he did wrong, which was at least 40 marks in total (including his own skipping of Qs)

i just don't want him to get too cocky, that's all :L

inb4100

although id be surprised if he ended up getting 100, maybe even 90 as well

Haha, doesn't he go to my school? I am sure he would've done fine for AMC, though it seems like 100 is pushing it. Unless of course he's a mathematical prodigy which I am told by you, he isn't.

you go to sydney grammar??. he's not a mathematical prodigy. he's musically talented though

 

[tywebb]

For those who don't have it, the senior paper is at http://www.mediafire.com/?nbzv702d2ae69hp

 

[RivalryofTroll]

lol I think I guessed 1/256

I wished they defined what a GP was, it shouldn't make much difference to the actual level of ability needed in the process to solve the question

oh well, I'm hoping for a distinction anyway

I knew what a GP was but didn't get/understand the question anyways. So guessed it. Like I did for most of the test.

 

[Demento1]

you go to sydney grammar??. he's not a mathematical prodigy. he's musically talented though

I think I talked to you at the study meat for a while. Mhm, you mentioned he was a music scholar.

 

[bleakarcher]

I knew what a GP was but didn't get/understand the question anyways. So guessed it. Like I did for most of the test.

lol, all you had to do was apply the pythagorean theorem

Let the sides be 2, 2a, 2a^2
(2a^2)^2=(2a)^2+2^2
4a^4=4a^2+4
a^4-a^2-1=0
a^2=[1+sqrt(5)]/2
Hence, hypotenuse=2a^2=1+sqrt(5)

 

[Demento1]

lol, all you had to do was apply the pythagorean theorem

Let the sides be 2, 2a, 2a^2
(2a^2)^2=(2a)^2+2^2
4a^4=4a^2+4
a^4-a^2-1=0
a^2=[1+sqrt(5)]/2
Hence, hypotenuse=2a^2=1+sqrt(5)

Pretty much what I did. The idea of 'geometric progression' was made to throw off people although it isn't really that wordy.

 

[iBibah]

lol, all you had to do was apply the pythagorean theorem

Let the sides be 2, 2a, 2a^2
(2a^2)^2=(2a)^2+2^2
4a^4=4a^2+4
a^4-a^2-1=0
a^2=[1+sqrt(5)]/2
Hence, hypotenuse=2a^2=1+sqrt(5)

That's what I did too. This kind of question comes in schools too.

 

[iBibah]

Pretty much what I did. The idea of 'geometric progression' was made to throw off people although it isn't really that wordy.

Not really to throw off, that's just the term it's called when you do SnS. For people who haven't done the topic it looks weird but becomes quite customary after Year 11.

 

[bleakarcher]

I personally reckon I didn't do well, didn't have any sense for time either (spent so much time just sitting there thinking it will end any second now lol). Hadn't done it for like 2 years prior however. Hoping for much better next year.

 

[sdort]

So what was the answer for the last few?
I got 6 for 29, although apparently it was 2. Any ideas?

 

[RealiseNothing]

So what was the answer for the last few?
I got 6 for 29, although apparently it was 2. Any ideas?

What was the question?

 

[iBibah]

q29 was the terryfic list
and sorry to break any bubbles but q26 aint 200

What did you get? (with working plz)

 

[giftprize]

Do you know where I can find middle primary and upper primary papers? I am keen to see how my brothers went? Thanks very much!

 

[RealiseNothing]

q29 was the terryfic list
and sorry to break any bubbles but q26 aint 200

Working out then.

I'm pretty sure it is 200...

 

[RealiseNothing]

q29 was the terryfic list
and sorry to break any bubbles but q26 aint 200

Was the question 29 the same in the year 10 paper too?