Maths brain teaser for you!
09 October 2007, 12:01 PM
#1
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Maths brain teaser for you!
FIVE+
TWO+
ONE
_______
= EIGHT
to make the equation above work calculate which digit each letter corresponds to using base 10 numbers.
A work colleges 12 year old son had this for his maths homework! Took me and another programmer a good 20 minutes to crack it
Good Luck!
TWO+
ONE
_______
= EIGHT
to make the equation above work calculate which digit each letter corresponds to using base 10 numbers.
A work colleges 12 year old son had this for his maths homework! Took me and another programmer a good 20 minutes to crack it
Good Luck!
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No idea what you're talking about, but it looks tricky!
09 October 2007, 12:17 PM
#3
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I have no idea what your talking about either. base 10 numbers is just simple decimal isnt it? Or am I missing something here 
You start of by saying to make this equation work (well it does already as 5+2+1 does actually equal 8 unless my maths teacher taught me wrong)
You start of by saying to make this equation work (well it does already as 5+2+1 does actually equal 8 unless my maths teacher taught me wrong)
09 October 2007, 12:39 PM
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Took around eight minutes, seems fairly straightforward to me (think about what E and F must be, then relate O and T)
To make the constraints clearer you mean each letter must be matched to a different digit, there are ten letters to match each to ten digits zero to nine.
There is more than one solution.
To make the constraints clearer you mean each letter must be matched to a different digit, there are ten letters to match each to ten digits zero to nine.
There is more than one solution.
understand, think you needed to make the original question a little clearer but got there in the end. Didnt time it though
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09 October 2007, 12:45 PM
#8
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Took around eight minutes, seems fairly straightforward to me (think about what E and F must be, then relate O and T)
To make the constraints clearer you mean each letter must be matched to a different digit, there are ten letters to match each to ten digits zero to nine.
There is more than one solution.
To make the constraints clearer you mean each letter must be matched to a different digit, there are ten letters to match each to ten digits zero to nine.
There is more than one solution.
PM me what you got then brain box
09 October 2007, 01:52 PM
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For the bored at lunch:
If you assume each letter must have a different number, there are 3,628,800 different ways of matching letters to numbers.
Of those 3,628,800, how many solutions are there that make the sum work?
If you assume each letter must have a different number, there are 3,628,800 different ways of matching letters to numbers.
Of those 3,628,800, how many solutions are there that make the sum work?
09 October 2007, 05:24 PM
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Eh ...
Try swapping your digits around in those locations and see if it makes any difference 
Or have i got the wrong idea?
09 October 2007, 05:59 PM
#21
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Spot on speedking 
I have found 6 solutions, and I think I have sufficient evidence to show there are no others. I'll leave it to someone else to prove me wrong!
I have found 6 solutions, and I think I have sufficient evidence to show there are no others. I'll leave it to someone else to prove me wrong!
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