Which of the following leads to the correct mathematical solution for the number of ways that the letters of the word BOOK could be arranged to create a four-letter code?	Select:
A) 4!
B) 4! − ( 2!)
C) 4! − (3! × 2!)
D) 4!/( 2!)
E) 4!/(3! × 2!)
BOOK - four letters can be arranged in 4! ways   since 'O' repeats 2 times we need to divide the 4! ways by 2! to adjust repetition.   4!/(2!)   Ans. 4!/( 2!)) 4!/( 2!)
<result>D</result>
Which of the following leads to the correct mathematical solution for the number of ways that the letters of the word BOOK could be arranged to create a four-letter code?