The number of ways in which any four letters can be selected from the letters of the word CORGOO is

The number of ways in which any four letters can be selected from the word CORGOO is

The number of ways in which four letters can be selected from the word degree, is

The number of ways in which four letters can be selected from the word degree, is

The number of ways in which any four letters cab be selected from the word 'CORGOO' is

The number of ways in which any four letters cab be selected from the word 'CORGOO' is

Find the number of ways in which a selection of four letters can be made from the letters of the word "PROPORTION".

Find the number of ways in which onee or more letters can be selected from the letter. AAAAA BBBB CCC DD EFG.

Find the number of ways in which onee or more letters can be selected from the letter. AAAAA BBBB CCC DD EFG.