How many two letter words are formed using the letters of the word BOOK?	Choose the correct answer:
A) 12
B) 10
C) 6
D) 3
E) 9
The number of letters in the given word is four.   The number of TWO letter words that can be formed using these four letters is 4P2 = 4 * 3= 
<gadget id="calculator">4 * 3</gadget>
<output>12</output>
12.   12nswer:12
<result>A</result>
How many two letter words are formed using the letters of the word BOOK?