How many words of 4 consonants and 3 vowels can be made from 12 consonants and 4 vowels. If all the letters are different?

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Accepted Answer

Required no. of words = 12P4 x 4P3 = 12 x 11 x 10 x 9 x 4 x 3 x 2 = 120(100 - 1) x 24 = 288000 - 2880 = 285120

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