How many words can be formed with the ltters of the words
(i) HIGH SCHOOL and
(ii) INTERMEDIATE 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!)`