Que: The number of words of 4 consonants and 3 vowels can be made from 15 consonants and 5 vowels, if all the letters are different is ________ a. 3! * ¹²C₅ b. ¹⁶C₄ * ⁴C₄ c. 15! * 4 d. ¹⁵C₄ * ⁵C₃ * 7! Answer: ¹⁵C₄ * ⁵C₃ * 7!