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Australian Maths Competition (1 Viewer)

Mongoose528

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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.
 

jathu123

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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
Refer to the previous posts
Here's a solution to one of them:

View attachment 34157
 

Mongoose528

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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
 
Last edited:

Ashaaz

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Australian Mathematics Competition

I was just wondering if anyone has past papers and answers for this competition as I would like to make an start to practicing for the test. Year 8
 

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