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 Xyzzy 2019-06-02 11:52

June 2019

[url]http://www.research.ibm.com/haifa/ponderthis/challenges/June2019.html[/url]

 Dieter 2019-06-02 21:28

The distance has to be less than 10^{-15} , but not zero. Otherwise {2,8,72} and {32,50} were a simple solution.

 a1call 2019-06-02 21:49

As well as {25} and {9, 4}

 SmartMersenne 2019-06-02 23:04

Well, it can even be {1} and {1}, because nobody said they should be different. :smile:

 Dieter 2019-06-03 04:48

Is 1 a smooth number?

 SmartMersenne 2019-06-03 05:54

[QUOTE=Dieter;518425]Is 1 a smooth number?[/QUOTE]

If you are asking just to question the simple answer we can go with {2} and {2}.

If you are really asking, then we can use the definition on Wikipedia page on "[URL="https://en.wikipedia.org/wiki/Smooth_number"]Smooth Number[/URL]"s which defines it as:

"A positive integer is called B-smooth if none of its prime factors is greater than B."

As none of 1's prime factors are greater than 1, it is N-smooth for any N > 1.

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