Find the number of words formed, wilth the letters of the word DELHI when any letter may be repeated any number of times.

Find the number of words formed with the letters of the word 'INDIA'.

Find the number of words formed with the letters of the word 'MISSISSIPPI'.

Find the number of different words formed with the letters of the word HARYANA.

The number of 5 letter words formed with the letters of the word CALCULUS is divisible by :

Find the number of words formed by permuting all the letters of the following word: INDIA

Find the number of words formed by permuting all the letters of the following word: SERIES

(i) Find the number of words formed with the letters of the word 'MATHEMATICS' in which vowels never occur together. (ii) Find the number of words formed with the letters of the word'CHANDIGARH'. In now many words, both 'A' will not be together?

How many 3-digit numbers are there when a digit may be repeated any number of times?