How many words of 4 consonants and 3 vowels can be made from 12 consonants and 4 vowels?
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1
4 consonants out of 12 can be selected in 12C4 ways.
3 vowels can be selected in 4C3 ways.
Therefore, total number of groups each containing 4 consonants and 3 vowels = 12C4 * 4C3
Each group contains 7 letters, which can be arranging in 7! ways.
Therefore required number of words = 124 * 4C3 * 7!
Answered by
0
12C4 * 4C3=1584...hope you understood
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