![SOLVED: If radio station call letters must begin with either the letter K or W and must include either two or three additional letters, how many different possibilities are there? SOLVED: If radio station call letters must begin with either the letter K or W and must include either two or three additional letters, how many different possibilities are there?](https://cdn.numerade.com/ask_previews/7ffcd96b-1f39-4e7b-bdf4-57d141ecb470_large.jpg)
SOLVED: If radio station call letters must begin with either the letter K or W and must include either two or three additional letters, how many different possibilities are there?
![RF coils on a FM radio receiver circuit board intermediate frequency ( IF ) stage Stock Photo - Alamy RF coils on a FM radio receiver circuit board intermediate frequency ( IF ) stage Stock Photo - Alamy](https://c8.alamy.com/zooms/6/af4bb2767ded4c9e901dc981f59ee75f/afj3g1.jpg)
RF coils on a FM radio receiver circuit board intermediate frequency ( IF ) stage Stock Photo - Alamy
![Signal processing diagram. (RF: Radio frequency, LO: Local oscillator,... | Download Scientific Diagram Signal processing diagram. (RF: Radio frequency, LO: Local oscillator,... | Download Scientific Diagram](https://www.researchgate.net/publication/300691940/figure/fig1/AS:415569498132480@1476090897179/Signal-processing-diagram-RF-Radio-frequency-LO-Local-oscillator-IF-Intermediate.png)