If words are formed by taking only 4 at a time out of the letters of the word PHYSICAL, then the number of words in which Y occur is

How many different words can be formed by taking four letters out of the letters of the word 'AGAIN' if each word has to start with A ?

The number of words that can be formed out of the letters of the word " COMMITTEE"

The number of words that can be formed out of the letters of the word COMMITTEE is

The number of different words which can be formed by taking 4 letters at a time out of the letters of the word 'EXPRESSION' is

The different letters of the alphabet are given, Out of which five letter words are formed. Then the numbers of words in which at least one letter is repeated is