document.write( "Question 1208339: Find the next term 5, 14, 17, 30, \n" ); document.write( "
Algebra.Com's Answer #846700 by ikleyn(52792)![]() ![]() You can put this solution on YOUR website! .\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Questions of this form and of this type are mathematically \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "An arbitrary finite sequence of numbers does not indicate the next term \n" ); document.write( "and does not determine what the next term should be, \n" ); document.write( "until a special separate procedure, a formula or a rule specifies on how to determine the next term.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Therefore, if and when any witch doctor/(woodoo doctor)/(charlatan) gives you a definite answer - know \n" ); document.write( "that you are either being screwed, or deceived, or mocked.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is known and it is clear to anybody and to everyone, who has \n" ); document.write( "a bit of common sense in his or her brain inside his or her head.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The only correct answer to this question/problem and to million other \" problems \" of this kind is \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \"any number can be next term\",\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "but it is, obviously, not what the asking person does expect.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So, please do not post nonsensical problems of this type to this forum in the future.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Thank you very much and have a nice day !\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "/////////////////////////\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Edwin, one standard approach to such problems is to make a row of first differences;\r \n" ); document.write( "\n" ); document.write( "then below it to make next row of second differences\r \n" ); document.write( "\n" ); document.write( "and so on until you get the row consisting of one unique number.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Then it is assumed (without having ani solid base) that all differences of certain order are constant, \n" ); document.write( "and based on it, making backward steps, people restore the original function.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Or, in more simple terms, people simply request and find a polynomial approximation \n" ); document.write( "(\"exact fit\") to the given sequence from online Internet solvers.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Then, using this polynomial, they calculate \"the next number\" and declare/demonstrate \n" ); document.write( "it as the ANSWER (without having any solid base for it).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The refutation to it is the fact, that we can add another polynomial to the first polynomial \n" ); document.write( "which has zeroes at the given points 1, 2, 3, 4, but has an arbitrary value in the \"next point #5\".\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "This is the whole story and the whole tale.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Edwin, you invite me to bring this knowledge to other people.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The world is full of mathematically illiterate people. The number of them is billions.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "To me, the TRUTH is clear from the first glance; but I will not spend my time and my efforts \r \n" ); document.write( "\n" ); document.write( "to bring/explain this truth to millions others, where and why they are wrong. For it, they should \r \n" ); document.write( "\n" ); document.write( "have some adequate mathematical education, which they, as a rule, do not have.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "How I can convince them, if during the years I can not convince you, who has a university Math education ?\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "For these people, my advise is to use good sources and do not use bad sources for their Math problems.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " Good sources are those that are written by specialists and professionals.\r \n" ); document.write( "\n" ); document.write( " Bad sources are those that are created by all others.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "At this forum, the visitors regularly bring their problems \"from garbage bins\",\r \n" ); document.write( "\n" ); document.write( "but I can do nothing against it (unfortunately).\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "For such visitors, I only have this standard message, which is the first part \n" ); document.write( "of my post. I keep this message in my archive and use it to respond every time, \n" ); document.write( "as the current nonsensical post/request comes.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Regarding this practice on giving such nonsensical problems as the test for getting jobs,\r \n" ); document.write( "\n" ); document.write( "these people from HR departments deserve to be fired immediately, since they \r \n" ); document.write( "\n" ); document.write( "do not understand what they are doing and are not adequate to their positions.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "||||||||||||||||||||||||\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "In the shortest words, this problem is a puzzle of the most low level - \n" ); document.write( "- of that kind what some charlatans give to unexperienced naive amateurs \n" ); document.write( "to help them to kill their time and to get their money, giving them NOTHING back.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "In such puzzles, a correct mathematical solution is impossible, is not required and even is not assumed.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "What is required - are these two things:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " - (1) amateurs kill their time in exact accordance with their most wanted hidden desire, and they are very happy of it;\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " - (2) those who create these puzzles for them, leave the scene taking their money in their pockets, and they are happy, too.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Everything else does not matter and does not play any role.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Everybody is satisfied and everybody is happy.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " Only me work here in the sweat of the face, \r \n" ); document.write( "\n" ); document.write( " explaining you all details of this backstage.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " All such puzzles are \r\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "\\\\\\\\\\\\\\\\\\\\\\\\\\\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Edwin, reading your post, I see that you are wonder, why two different logical \n" ); document.write( "reasoning to this puzzle lead to different results.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You should not be surprised. It is completely natural.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is the same as if two different formulas, applied to 4 given numbers, would lead to different results.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Nobody has ever proved a theorem on the uniqueness of the solution of crazy puzzles.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is absolutely natural that two different approaches, applied to the given set of input numbers lead to different results.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Simply, let me repeat it again, all this activity around this crazy puzzle is a kind of gibberish.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is as clear to anybody in healthy mind as 2 x 2 = 4.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |