1. (10 points) In a certain state, license plates consist of 4 English letters. Repetition of symbols is not allowed. Ho
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1. (10 points) In a certain state, license plates consist of 4 English letters. Repetition of symbols is not allowed. Ho
1. (10 points) In a certain state, license plates consist of 4 English letters. Repetition of symbols is not allowed. How many license plates contain at least 3 vowels? Justify! (There exist 26 letters in the English alphabet, of which 5 are vowels.) A. 21. () - (4!) - (): (4!) = 4920) B. 21. ) (4!) + () - (4!)(=5160) C. (5) 0) (4!) - (35) ) · (3)(= 3946800) D. (3) . () · (4!) + (26). ©)(3!)(= 11840400) E. None of the above . + .
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