To the top of Vista slope, and around the lake

10k row

Squeeze it in before the sun goes down

Two weeks off! Still feeling blech

Tempo on a treadmill

You are blindfolded and can't tell by feel which are heads and which are tails. Your job: Create two groups of coins that each have the same number heads-up.

Some caveats: 

A "group of coins" must have at least one coin. (So, no - "two groups of size zero" does not solve the problem)

Standing coins up on their edge is not a part of the solution (good try Florian!)

To be clear, you do not have to use all the coins (so, for example, you could end up with one group of 10 coins, and a second group of 20 coins, while 70 coins go unused)

Sports les plus pratiqués

Larry Sanderson

You have 100 coins, and 20 of them are heads up...

5 commentaires

Temps intermédiaires

Inscrivez-vous pour voir d'autres activités de Larry Sanderson

To the top of Vista slope, and around the lake

10k row

Squeeze it in before the sun goes down

Two weeks off! Still feeling blech

Tempo on a treadmill

Vous voulez en voir plus ?

L'application nº 1 pour les coureurs et les cyclistes

Inscrivez-vous gratuitement. Suivez vos progrès et atteignez vos objectifs. Rejoignez les 100 millions de personnes actives sur Strava.

Voir plus de contenu de Larry