Australian Maths Competition (3 Viewers)

Official

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Re: 2009 AMT Mathematics Competition

How was it? I personally found it harder than earlier years.
Feel free to discuss the test or any of the questions.
Did anyone confidently solve the last 5 questions?
The Westpac comp yeh?

Yeh, I did the Senior Divison and I found that it was really difficult compared to past senior papers.

I'm confident I got 26 and 27 correct.
 

kurt.physics

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Re: 2009 AMT Mathematics Competition

The Westpac comp yeh?

Yeh, I did the Senior Divison and I found that it was really difficult compared to past senior papers.

I'm confident I got 26 and 27 correct.
How did you solve 27?
 

Official

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Re: 2009 AMT Mathematics Competition

How did you solve 27?
Well I knew the last digit of the answer had to be a relatively large number because it is an Ascending number. So I assumed that the last digit of n had to be 8. (6*8) = 48, has 8 as a last digit.

From that step, I pretty much used trial and error of 3 digit numbers, keeping 8 as the last digit. Eventually, I came to the solution: 578. 578 * 6 = 3468, which is also an Ascending number.
 

nerdsforever

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Re: How did people go in the maths comp today?

it was easier than last year's. I'm scared the machine won't be able to read my answers, because I didn't colour dark enough.
 

kurt.physics

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Re: How did people go in the maths comp today?

Official did you have the rabit question in your exam, i got the minimum number of rabits is 31. Did you get this?
 
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nerdsforever

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Re: 2009 AMT Mathematics Competition

nice, Official. I almost got that except I gave up when I got to 570.
 

gurmies

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Re: 2009 AMT Mathematics Competition

I only got one out of the last 5...question 27 was 578. I firstly ruled out the numbers that couldn't be at the end or middle and then it boiled down to a possibilty of like 10 which I tested and only one worked.
 

google5678

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Re: How did u go in the Australian Maths Competition?

I didn't get any of the last ones but the multiple choice where easier than I expected. Still, I expect i failed. :eek:
 

Official

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Re: 2009 AMT Mathematics Competition

I only got one out of the last 5...question 27 was 578. I firstly ruled out the numbers that couldn't be at the end or middle and then it boiled down to a possibilty of like 10 which I tested and only one worked.
Nice :). How do you think you went in general, and what do you think the HD cut off will be this year?
 

Official

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Re: How did people go in the maths comp today?

What was the 26 senior question?
It was something along the lines of:

The reciprocal of 4 numbers add up to make a total of 19/20. 3 numbers are in the ratio of 1:2:3. Find the sum of the 4 numbers.

There could have been more detail but if there was, I can't remember
 

gurmies

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Re: How did people go in the maths comp today?

integers for question 26...i've got the paper here so I can post any requested questions.
 

Hypermelon

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Re: How did people go in the maths comp today?

lol the map question
my friend actually folded paper for that one
 

kurt.physics

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Re: How did people go in the maths comp today?

Can you remember what answers you came to, i got (E)?
 

gurmies

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Re: How did people go in the maths comp today?

LOL same here. That's one of the ones I got wrong -_-
 

nerdsforever

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Re: How did people go in the maths comp today?

yeah, i folded the map question and i got E.
 

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