How many selections and arrangementsof 4 letters can be made from the letters of the word PROPORTION?

Find the number of ways in which: (a)a selection (b) an arrangement,of four letters can be made from the letters of the word 'PROPORTION

Find the number of ways in which (a) a selection ,(b) an arrangement of four letters can be made from the letters of the word 'PROPORTION' ?

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

How many arrangements can be made of the letters of the word 'ARRANGEMENT'?

How many combinations of 4 letters can be made of the letters of the word ‘JAIPUR’ ?

How many 4 letter words can be formed using the letters of the word 'PROPORTION'.

How many different arrangements can be made with the letters of the word' ORIENTAL?

How many arrangements can be made out of the letters of the word 'ENGINEERING'?