SOLUTION: Televsion and radio stations use four call letters that begin with W or K, such as WXYZ OR KFRP. Assuming no repetitions in the second to fourth letters, how many four-letter sets

Algebra ->  Permutations -> SOLUTION: Televsion and radio stations use four call letters that begin with W or K, such as WXYZ OR KFRP. Assuming no repetitions in the second to fourth letters, how many four-letter sets       Log On


   

Question 866984: Televsion and radio stations use four call letters that begin with W or K, such as WXYZ OR KFRP. Assuming no repetitions in the second to fourth letters, how many four-letter sets are possible using either W or K and only the letters L to V for the remaining 3 letters?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The 1st is 1 of 2, W or K
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L to V inclusive is 11 letters.
The 2nd is 1 of 11, then 1 of 10, then 1 of 9.
--> 2*11*10*9
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W is used east of the Mississippi, K west, with a few exceptions.
KDKA is in Pittsburgh, for one.