In how many ways can the letters of the word BUTTER be arranged in a row so that the vowels appear in alphabetic order?
Choices:	A) 380	B) 420	C) 360	D) 400	E) 320
two letters can be arranged in 2! ways.   only one combination EU is required.   6 letters can be arranged in 6! ways.   thus 6!/ 2! * 1 = 360   360
<result>C</result>
In how many ways can the letters of the word BUTTER be arranged in a row so that the vowels appear in alphabetic order?