³ÉÈË´óƬ

The second part of the Four Fours

The four fours is a rather famous little puzzle that requires some creativity and also gets people thinking about how the operations interact with each other. One thing I find both frustrating and fascinating is what happens when people come up with numbers that are very hard to produce with the standard basic operations of addition, subtraction, multiplication and division. People seem to be focused on producing the results in any way they can, rather than asking whether it's possible to produce the results. You also start getting solutions using All The Things, even though it's totally possible to get the answer for some of them just using the most basic of operations.

[Read more about The second part of the Four Fours]