In: Statistics and Probability
Consider arranging the letters of FABULOUS.
(a). How many different arrangements are there?
(b). How many different arrangements have the A appearing anywhere before the S (such as in FABULOUS)?
(c). How many different arrangements have the first U appearing anywhere before the S (such as in FABULOUS)?
(d). How many different arrangements have all four vowels appear consecutively (such as FAUOUBLS)?
I am stuck with b , c and d