Find the number of four letter word that can be formed from the letters of the word `HISTORY`(each letter to be used atmost once)

Find the number of 4 letter words that can be formed from the letters of the word ALLAHABAD.

Number of four letter words that can be formed from the letters of the word RESONANCE is

Find the number of words that can be formed from the letters of the word, COMMERCE'

Find the number of words that can be formed from the letters of the word MALAYALAM.

Find the number of 4 letter words that can be formed from the letters of the word "ALLAHABAD" .

Find the number of 4 - letter words that can be formed using the letters of the word RAMANA.

Find the number of 5 letter words that can be formed using the letters of the word RHYME if each letter can be used any member of times.