1.

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» E.


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