How many 4-letter words can be formed using a,b,c,d and e
(i) without repetiton.
(ii) with repetition.

How many three letter words can be formed using a,b,c,d,e if Repetition is not allowed il. repetition is allowed?

How many 3-letter words can be formed using a, b, c, d, e if (i) repetition of letters is not allowed? (ii) repetition of letters is allowed?

How many three letter words can be formed using a , b , c , d , e if Repetition is not allowed ii. repetition is allowed?

How many two letter words can be formed using letters from the word SPACE, when repetition of letters (i) is allowed, (ii) is not allowed?

How many three letter words can be formed using the letters of the word NARESH? (Repetition of letters is not allowed)

How many different words can be formed by using all the letters of the word ZERO without repetition ? What is the rank of the word ZERO in a dictionary ?

Using the letters of the word PUBLIC, how many four letter words can be formed which begin with B and with P? (Repetition of letters is not allowed

How many 5 - letter words can be formed out of the letters of the word KNIFE ,if repetition of letters is not allowed.