Adamlar işi gücü bırakmışlar ayakkabı bağcıklarını bağlamanın kaç yolu var diye düşünmüşler ve bir hesap yapmışlar. İşte formül:
* Feed through one of 12 eyelets from either inside or outside. That’s 24 possible ways to start.
* Continue through one of 11 remaining eyelets from either inside or outside (x 22 more ways).
* Then 10 remaining eyelets (x 20 more ways). We’ve only gone through three eyelets and we’re already up to 24 x 22 x 20 = 10,560 ways!
* By the time we reach the last eyelet (x 2 more ways), the possible ways have multiplied to 24 x 22 x 20 x 18 x 16 x 14 x 12 x 10 x 8 x 6 x 4 x 2 ways, a staggering total of 1,961,990,553,600.
İşte web siteleri: fieggen.com