Re: Odd one out

On 09/04/2025 09:10, Richard Heathfield wrote:

(a) Which of these numbers is the odd one out, and for what compelling[1] reason?
 16435934
14613198
64222
4206546606
12496365
5474308
14600926
11325150
 (b) Name his playmate.
 [1] If your reason is the obvious one, ask yourself whether it's compelling /enough/.

<crickets>
A rec.puzzles regular has assured me in email that my puzzle is fair (or at least 'maybe not unfair'!), but he also observed that to solve it will take 'out-of-the-box thinking'.
If you've solved (a) you're only halfway there, and it may be time to look at things in a new way!
--
Richard Heathfield
Email: rjh at cpax dot org dot uk
"Usenet is a strange place" - dmr 29 July 1999
Sig line 4 vacant - apply within