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Saturday, January 27, 2007

 

Welcome Adelaide Advertiser Readers

Hello everyone who is coming here via the net adventures section by Samela Harris from the Adelaide Advertiser. Please browse around, the McNaught Chart is here. I'll be putting up more readers images tomorrow. Right now I'm preoccupied with EldestOnes 1010 birthday (you have to convert from binary).

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Could you please explain what is EldestOnes 1010 birthday ??

Thanks
 
Binary isn't as tricky as people think. We are quite used to working in decimal where we have (from right to left) a "units column", a tens column, a hundreds column etc. So the number 347 has 7 in the units, 4 lots of ten and 3 lots of 100. The final number is therefore 1*7 + 4*10 + 3*100.

Binary is similar except that rather than each column go up by a factor of 10 as we move leftwards (1, 10, 100, 1000...), they go up by a factor of 2 (1, 2, 4, 8...). The furthest most right digit is the ones column (none of them), the next left is the twos column (one of them), the next is the fours column (none) and the furthest left is the eights column (one of them). So, add up what we have 1*8 + 0*4 + 1*2 + 0*1 = 8 + 2
 
1010 is a representation of EldestOnes age in binary. Stuart has shown how to translate binary, but here's another clue. Eldest ones age is a double digit number, which is the sum of MiddleOnes and Smallest Ones ages. MiddleOne one and SmallestOne are prime numbers old, and Smallest Ones age added to eldest ones age is a prime number as well. Smallest Ones age subtracted from Middle ones age is an even number, and Smallest Ones age subtracted from EldestOnes age is MiddleOnes age.

It's fairly straight forward, really.
 
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