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Unformatted text preview: n = 4 colors is P (4 , 3) = 4 · 3 · 2 = 24. 1.33 (a) Step 1 . The r = 2 letters can be chosen with possible repetition from n = 26 letters 26 2 ways; Step 2 . The r = 4 digits can be chosen (with possible repetition) 10 4 ways. The number of diﬀerent license plates is 26 2 · 10 4 = 6 , 760 , 000. (b) 26 3 · 10 3 = 17 , 576 , 000. 1.34 P (9 , 4) = 9! 5! = 3024. 1.35 (a) P (4) = 4! = 24. (b) 4 4 = 256. 1...
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This note was uploaded on 10/13/2010 for the course MATH 414 at Pennsylvania State University, University Park.
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