Australian Maths Competition (5 Viewers)

[Official]

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]

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]

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]

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]

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?

 

[nerdsforever]

Re: 2009 AMT Mathematics Competition

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

 

[kurt.physics]

Re: 2009 AMT Mathematics Competition

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

Yeh, nice. For that question i cbf even trying, I despise brute force!!!

 

[Official]

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 15. Did you get this?

Oh, nope sorry, I didn't have that question.

 

[gurmies]

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]

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.

 

[kurt.physics]

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

Oh, nope sorry, I didn't have that question.

What was the 26 senior question?

 

[Official]

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]

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]

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]

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

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

 

[Official]

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

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

Same here hehe.

 

[kurt.physics]

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

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

 

[gurmies]

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

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

 

[Official]

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

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

For the map question I got the option where the 3rd letter is W. Besides that I can't remember

 

[nerdsforever]

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

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