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<p>[QUOTE="Dave M, post: 3377448, member: 17469"]I have a math degree, but for some reason numbers on banknotes has never interested me. But your comment about any sequence of 8 integers having an interesting explanation reminds me of all those "find the next number" exercises where you're given something like:</p><p>"If the first 4 numbers are: 5 22 76 124, what is the next number in the series?"</p><p>I remember answering one in some class, as "777" or some such, with the explanation that the 5 numbers were the possible values of X in the equation:</p><p>(x-5)*(x-22)*(x-76)*(x-124)*(x-777) = 0</p><p>This same mechanism could be used to convince yourself that *any* set of digits on a banknote were a mathematical equation, though I don't suggest collecting all of them <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>
[QUOTE="Dave M, post: 3377448, member: 17469"]I have a math degree, but for some reason numbers on banknotes has never interested me. But your comment about any sequence of 8 integers having an interesting explanation reminds me of all those "find the next number" exercises where you're given something like: "If the first 4 numbers are: 5 22 76 124, what is the next number in the series?" I remember answering one in some class, as "777" or some such, with the explanation that the 5 numbers were the possible values of X in the equation: (x-5)*(x-22)*(x-76)*(x-124)*(x-777) = 0 This same mechanism could be used to convince yourself that *any* set of digits on a banknote were a mathematical equation, though I don't suggest collecting all of them :)[/QUOTE]
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