In how many ways can the letters of the word WAYS be arranged in a row so that the vowels appear in alphabetic order? Choose the correct choice from the following: A) 160 B) 220 C) 150 D) 120 E) 180
three letters can be arranged in 1! ways.   only one combination AEI is required.   4 letters can be arranged in 4! ways.   120
<result>D</result>
In how many ways can the letters of the word WAYS be arranged in a row so that the vowels appear in alphabetic order?