The number of way in which any four letters can be selected from the words ''SCOOBB'' is
The number of ways in which any four letters can be selected from the word 'CORGOO' is_______.
The number of ways in which any four letters can be selected from the word "EXAMINATION” is ______.
The number of ways in which any four letters can be selected from the word "EXAMINATION” if two letters are alike and other two are distinct.
The number of ways in which any four letters can be selected from the word "EXAMINATION” if two letters are alike and other two letters are also alike.