An European mathematician likes to have a balanced breakfast every day.

It always includes whole milk and exactly one ingredient out of the list below:

  • Butter
  • Cheese
  • Yoghurt

What is the mathematician's nationality?

  • $\begingroup$ Does he vary between those 3? Or is it always milk & butter f.ex? $\endgroup$ Commented Mar 16, 2020 at 19:46
  • 2
    $\begingroup$ I see the language tag here. Do we need any foreign language knowledge to answer? $\endgroup$
    – Duck
    Commented Mar 16, 2020 at 20:13
  • 1
    $\begingroup$ Just want to point out how unbalanced any of those breakfasts would be $\endgroup$
    – anodyne
    Commented Mar 16, 2020 at 21:44

1 Answer 1


A look in a thesaurus tells us that a synonym of 'balanced' is:


This might mean that this mathematician prefers their breakfast to have:

An even number of letters in total among its ingredients.

Since they use 'whole milk'...

(which is 9 letters long) they will need to add another ingredient with an odd number of letters in order for the combined ingredients to have an even number of letters overall. The one ingredient on the list with an odd number of letters is YOGHURT (7 letters).

Since the mathematician is from a European country, this means they are most likely:

BRITISH, since this is the common British spelling of a word often spelled 'yogurt' (without the 'H') in other parts of the English-speaking world.

(I think they could also be Irish - I'm not 100% of the spelling there - but since the UK has a much greater population (66m vs approx. 5m) by probability alone they are more likely to be British...)

  • $\begingroup$ The answer is unambigous. $\endgroup$ Commented Mar 16, 2020 at 17:49
  • 2
    $\begingroup$ I'd be a bit disappointed if this is it. Looks a bit random, and not very self-confirming. (Also, I didn't know yogurt vs yoghurt was a British/American thing?) $\endgroup$ Commented Mar 16, 2020 at 17:52
  • $\begingroup$ @Randal'Thor This article gives a fairly nice balanced look at UK vs US. And I would query your use of 'random' when I've explained my step-by-step logic above! ;) $\endgroup$
    – Stiv
    Commented Mar 16, 2020 at 18:00
  • 2
    $\begingroup$ I mean, the question would be a bit random if this is the intended answer. $\endgroup$ Commented Mar 16, 2020 at 18:05

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