The total number of words, which can be formed out of the letters a, b, c, d, e, f taken 3 together, such that each word contains at least one vowel is ?

The total number of words, which can be formed out of the letters a, b

1.	The total number of words, which can be formed out of the letters a, b, c, d, e, f taken 3 together, such that each word contains at least one vowel is ?
A.	72
B.	48
C.	96
D.	None of these
Answer» D. None of these