Add new comment
-
Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.
What do chocolate and mayonnaise have in common? It's maths! Find out how in this podcast featuring engineer Valerie Pinfield.
Is it possible to write unique music with the limited quantity of notes and chords available? We ask musician Oli Freke!
How can maths help to understand the Southern Ocean, a vital component of the Earth's climate system?
Was the mathematical modelling projecting the course of the pandemic too pessimistic, or were the projections justified? Matt Keeling tells our colleagues from SBIDER about the COVID models that fed into public policy.
PhD student Daniel Kreuter tells us about his work on the BloodCounts! project, which uses maths to make optimal use of the billions of blood tests performed every year around the globe.
Kaprekar’s constant 6174 can be
considered to be a disguised form
of the silver ratio (that is, the
reciprocal of the golden ratio).
Rationale:
There are 9990 4-digit numbers
having at least 2 distinct digits.
The location of Kaprekar’s
constant among them is, to
4 decimal places, the silver
ratio deep among them,
the silver ratio being the
reciprocal of the golden ratio
(not to be confused with
the silver mean, also known
as the silver ratio).
That is to say, 6174/9990 is,
to 4 decimal places, 0.6180.
So, every 4-digit number, at
the beginning of the Kaprekar
process, shouts out “Hi-Yo Silver!”