1 .

# In how many different ways can the letters of the word PRACTICE be arranged?

[ A ]    26100
[ B ]    20160
[ C ]    21060
[ D ]    20106
[ E ]    None of these
 Answer : Option B Explanation : Here the number of letters in the word is 8 and C occurs twice. Number of ways = $8!\over 2!$ = 20160