* This trope is sometimes combined with PlotTailoredToTheParty. Multiple characters who attack a specific enemy may get their asses handed to them not necessarily because they're weak but because they're not the suited ''people'' to fight that specific foe. A token enemy can easily overwhelm a group of heroes, but a one-on-one will be much harder fight.
* [[http://tvtropes.org/pmwiki/pmwiki.php/UsefulNotes/MiyamotoMusashi Miyamoto Musashi]] said in the Book of Five Rings that "one man can beat ten men. Just as one man can beat ten, so a hundred men can beat a thousand, and a thousand men can beat ten thousand. In my strategy, one man is the same as ten thousand"
* Whenever lions and hyenas decide to fight each other over food and territory, this ends up occurring. Normally, one would expect the lions to win due to being larger and stronger. However, the hyenas (due to being Africa's most common carnivore) tend to be more numerous and therefore can work as a team to take them on.