On 8/20/20 5:00 PM, Gregg Eshelman via Emc-users wrote:
What blows some people's minds is that the sum of two odd numbers is always an even number, the sum of two even numbers is also always an even number. The only way to get an odd number from adding any two numbers is one number must be odd. That's a math feature often used in number collecting games where the object is to add up to an odd number like 21. The number of winners is easy to control by how many game pieces with an odd number are released. Get any odd number and you're a winner because it's super easy to collect the right even numbers to add together. Pepsi did that years ago where if you collected bottle caps totaling 21 they'd get you a pair of tickets to ANY event in the USA. Super Bowl, some big gaming convention, whatever. On Thursday, August 20, 2020, 12:48:51 AM MDT, Chris Albertson <albertson.ch...@gmail.com> wrote: What happens is these concepts get beaten into your brain so well that we think we never learned them and it is just "common sense". Not no it is not common sense, the smartest people who ever lived spent much of their life figuring out something in the mid 1600's and you learned it in 10 minutes and then forgot when. But now it is dead-obvious that every whole number is the product of a unique set of primes. How could that NOT be true? So we are prone to say "It is obvious that..." But then again no one is born knowing this and for most of human history, no one knew this obvious fact. But it becomes obvious after we forget where we learned it.
Since we are obviously OT I will compound it. One of the tests for dementia is a count backwards from 100 by 7's. My wife does it in a subtract 3 , subtract 4 sequence. " I think it is obvious that"... the easy way to to subtract 10 add three. People are different in their approach to problem solving and that is what make them so 'interesting'. :-)
Dave
_______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
_______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users