This is an entry into the 16th Fortnightly Challenge -

My friend just received a letter telling him he made it onto a really famous TV show,

and he won't tell me which!

All he gave me was his plan of what to do on the show, and said I should be able to work it out from that:


What show is my friend going on?


1 Answer 1


This looks like the infamous

Monty Hall problem

to me.


W and L denote winning and losing doors; C and S denote changing door and staying with the same door; and the fact that following "C" edges leads to two W and one L, while following "S" edges leads to two L and one W, indicates that when Monty opens a losing door you should then change to the other one.

So the show is

Let's Make a Deal.

  • $\begingroup$ That is correct, can you add reasoning? $\endgroup$ Sep 21, 2016 at 19:57
  • $\begingroup$ Was already doing (and adding the name of the show, which was the single thing actually asked for and which I'd omitted). Better now? $\endgroup$
    – Gareth McCaughan
    Sep 21, 2016 at 19:59
  • $\begingroup$ Yes thanks, didn't actually know the show! Just was looking for Monty Hall :P $\endgroup$ Sep 21, 2016 at 19:59
  • $\begingroup$ I thought of this, I just could not make of any sense of the letters. Nicely done! $\endgroup$
    – Matsmath
    Sep 21, 2016 at 20:00
  • 7
    $\begingroup$ But what if I want a goat? $\endgroup$
    – Will
    Sep 21, 2016 at 20:01

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