[onraglanroad]

That's not an error, it's what 5 Guys advertise. It's the number of combinations for their toppings.

[autoexec]

That sounds like an error to me. "Number of toppings" is not the same as "Number of possible combinations of toppings".

[idontwantthis]

Shouldn’t it be a lot more? Around 20 toppings in any combination and count would be 20! + 19! + 18! … no?

[drivebyhooting]

2^20

Does order of toppings matter?

[jcgrillo]

yes, only a monster would put the pickles underneath the tomato