A hint to get started
Split repeated-vowel endpoints into disjoint cases
(a) Find the number of ways of arranging the word PRELIMINARY if the first and last letter is a vowel. marks
(b) A group of 10 students comprising 3 males and 7 females attended their graduation dinner. Find the number of ways of seating them at a round table with 10 chairs of different colours and no two male students seated next to each other. marks
[2011/RVHS/II/8]
CJC · Review problems · Question 7
Endpoint I’s are identical; distinguish I–I from I with another vowel.