# Numbers

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#1
For the first part of the question is what I've written valid and is there a much straight forward approach?
Last edited by Student 999; 4 weeks ago
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#2
Also can I just show for each configuration of a1,a2,a3 and provide a set of b1,b2,b3 that works?

For example if Betty knows, (2,3,4)= a_1,2,3
he/she can choose (3,4,2)= b_1,2,3 to win and repeat for all the possible configurations?
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4 weeks ago
#3
(Original post by Student 999)
For the first part of the question is what I've written valid and is there a much straight forward approach?
'Fraid I find your workings too torturous to read, so I don't generally look through them in any detail.

But I note at the outset, are non-negative integers; not necessarily positive integers. So, your initial list of possible triplets summing to 9 is far from complete.
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#4
(Original post by ghostwalker)
'Fraid I find your workings too torturous to read, so I don't generally look through them in any detail.

But I note at the outset, are non-negative integers; not necessarily positive integers. So, your initial list of possible triplets summing to 9 is far from complete.
Could you give me a set of numbers that sum to 9 that I haven’t considered yet?
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4 weeks ago
#5
(Original post by Student 999)
Could you give me a set of numbers that sum to 9 that I haven’t considered yet?
0,0,9
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4 weeks ago
#6
(Original post by Student 999)
For the first part of the question is what I've written valid and is there a much straight forward approach?
You write , without explaining what is, let alone why it equals 3.
Don't do that.

Edit: yes I know what you probably mean, and I know why you probably thought it was obvious. But I (or an examiner) should not be having to go through what you've written and basically fill in the gaps for you. Yes, this is a repeated them in my responses to you.
Last edited by DFranklin; 4 weeks ago
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