1. ## Re: Westpac Maths Comp marathon

Originally Posted by mathpie
What did everyone get for the last 5 (free response) questions in the senior division? I couldn't get any.. lol
I'm trying to remember a q from there, can u recall all of them?

2. ## Re: Australian Maths Competition

Originally Posted by Mongoose528
How would you solve this algebraically: A nude number is a natural number of whose digits are a factor of the number. Find all 3 digit nude numbers where no digits are repeated.

Can't seem to make in roads :/

I can solve it case by case, but I want to know a quicker way of how to do it.
Bump.

3. ## Re: Westpac Maths Comp marathon

Hi can anyone solve question 27 of the 2013 Senior AMC paper. I have tried many different methods but just cannot get it to work. I've tried finding the ratio of the areas/solving the areas simultaneously and all that. Please someone help as I've been trying to figure it out for a fortnight now. Show Working

4. ## Re: Westpac Maths Comp marathon

Originally Posted by Drdusk
Hi can anyone solve question 27 of the 2013 Senior AMC paper. I have tried many different methods but just cannot get it to work. I've tried finding the ratio of the areas/solving the areas simultaneously and all that. Please someone help as I've been trying to figure it out for a fortnight now. Show Working
Refer to the previous posts
Originally Posted by Mongoose528
Here's a solution to one of them:

Attachment 34157

5. ## Re: Australian Maths Competition

A bit of help on this question please, this is a bit of practice for the AIMO.

11.JPG

This is all the working I've managed to do

working.JPG

6. ## Re: Australian Maths Competition

$Hint: \\ If \triangle ABC is a triangle, and X is a point on the line segment BC with BX:CX=\lambda, then |\triangle ABX|:|\triangle ACX|=\lambda.$

7. ## Re: Australian Maths Competition

How did everyone go for the Australian Maths Competition?

8. ## Re: Australian Maths Competition

Got high 70s with Distinction, close to HD (

Page 26 of 26 First ... 16242526

There are currently 1 users browsing this thread. (0 members and 1 guests)

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•