How many words can be formed with the letters of the word 'HIGH SCHOOL' by rearranging them?

Explanation

(i) Here, total letters are 10, in which 3H's and 2O's, but the rest are different. Hence, the number of words formed=`(10!)/(3!2!)`
(ii) Here, total letters are 12, in which 2I's, 2T's and 3E's but the rest are different. Hence, the number of words formed`=(12!)/(2!2!3!)`