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- Newsgroups: sci.math
- Path: sparky!uunet!caen!lowrie
- From: lowrie@shear.engin.umich.edu (Robert Byron Lowrie)
- Subject: Re: A puzzle!
- Message-ID: <LXW-sk@engin.umich.edu>
- Date: Fri, 31 Jul 92 15:10:23 EDT
- Organization: University of Michigan Engineering, Ann Arbor
- References: <chepan.712011867@gsusgi1.gsu.edu> <1992Jul26.203418.20562@mailer.cc.fsu.edu>
- Keywords: Math, puzzle
- Originator: lowrie@shear.engin.umich.edu
- Nntp-Posting-Host: shear.engin.umich.edu
- Lines: 47
-
-
- In article <1992Jul26.203418.20562@mailer.cc.fsu.edu>, rose@fsu1.cc.fsu.edu (Kermit Rose) writes:
- > In article <chepan.712011867@gsusgi1.gsu.edu>, chepan@gsusgi1.gsu.edu (Parthasarathy Nambi) writes...
- > >
- > >
- > > Here is something for puzzle lovers:
- > >
- > > Below is a sequence of numbers, can you find the next two numbers and
- > > the general formula for generating numbers in this sequence:
- > >
- > > The numbers are:
- > >
- > > 4, 72, 21600, 190512000, 58090919040000, etc
- > >
- > >
- > > If you know the answer please post a response in this group.
- > >
- > >
- > > P.Nambi
- > >
- >
- > 2^2, 2^3 3^2, 2^5 3^3 5^2, 2^7 3^5 5^3 7^2, etc
- >
-
- I presumed that then,
-
- 58090919040000 = 2^9 3^7 5^5 7^3 9^2
-
- when in fact,
-
- 58090919040000 = 2^10 3^7 5^4 7^3 11^2
-
- Maybe the original posting is wrong? Because,
-
- 580909190400000 = 2^11 3^7 5^5 7^3 11^2
-
- which makes more sense (the base is a sequence of primes, with the
- exponents in reverse order).
-
- Thank you Maple V.
-
-
- --
- Rob Lowrie
- Aerospace Engineering Dept.
- University of Michigan
- lowrie@caen.engin.umich.edu
-