How many different factors can 210 have ?

How many different factors can 2160 have ?

How many different factors can 2310 have ?

The electron in a hydrogen atom is in the third energy state. How many different frequencies can the emitted photon have ?

How many different words can be formed with the letters of the word 'CAPTAIN'? In how many of these C and T are never together ?

How many different words can be formed with the letters of the 'BHARAT' ? How many of these begin with B and end with T ?

How many different words can be formed with the letters of the 'BHARAT' ? In how many of these B and H are never together ?

How many different words can be formed with letters of the word SUNDAY ? How many of the words begin with N? How many begin with N and end Y?

How many different words can be formed with the letters of the word CLIFTON.

25.How many different permutations can bemade out of the letters of the wordPERMUTATION?