The formula for a permutation is: nPr = (n!)/(n-r)! A combination, denoted by nCr, answers the question: “From a set of n different items, how many ways can you select (independent or order) r of these items?” Order is not important with combinations.

Where are the NPR offices?

TypePublic radio networkHeadquarters1111 North Capitol Street NE, Washington, D.C. Culver City, CaliforniaBroadcast areaUnited States Guam Puerto Rico American Forces NetworkParentNational Public Radio, Inc.Key peopleJohn Lansing (CEO)

How do I submit music to NPR?

If you’d like to submit music to the show, please send a stream or download link to [email protected].