You’ve promised to get your son the cutest creature in creation: the cuddly. It’s part of the Wuddly species, cousin to the terrifying duddly and the hideous fuddly. To make one, 100 eggs are placed in an incubator to undergo egg fusion, and the resulting combination will produce either a cuddly, a duddly or a fuddly.
There are 99 eggs in the incubator—23 blue, 33 purple, and 43 blue—and it needs one more to result in a blue egg that will hatch the cuddly wuddly that you’re hoping for. Which color egg should be put in the incubator? From TED-Ed and educator Dan Finkel: Can you solve the cuddly duddly fuddly wuddly riddle?
Here are the rules to figure it out for yourself: