From the word 'ASTOUNDER', how many independent words can be made without changing the order of the letters and using each letter only once ?

C. TWO

How many pairs of letters are there in the word 'CARROT' which have as many letters between them in the word as in the alphabet ?  

A. 1

How many pairs of letters in the word 'CATASTROPHE' have as many letters between them in the word as in the alphabet ?

C. THREE

How many pairs of letters are there in the word 'PENCIL' which have as many letters between them in the word as in the alphanet ?

C. TWO

How many pairs of letters are there in the word 'SEQUENTIAL' which have as many letters between them as are in the alphabet ?  

E. FOUR