How many words can be formed using the letter A thrice, the letter B twice and the letter C thrice?

How many words can be formed using the letter A thrice. the letter B twice and the letter C once ?

How many words can be formed using the letters E twice , the letter C thrice and the letter P twice ?

How many words can be formed using the letters E twice , the letter C thrice and the letter P twice ?

How many words can be formed using the letters of the word INDIA

How many different four letter words can be formed by using the four letters a,b, c, d, while the letter can be repeated ?

How many words can be formed from the letters of the word COURTESY, whose first letter is C and the last letter is Y?

How many different words are formed if the letters R is used thrice and letters S and T are used twice each?