A password of 4 letters is to be formed with vowels alone. How many such passwords are possible if.
(a) repetition of letters is allowed,
(b) repetition of letters is not 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 4-letter words with or without meaning, can be formed using the letters of the word RUCHIKA, if (i) Repetition of letters is not allowed (ii) Repetition of letters is allowed

How many three letter words can be formed using the letters of the word NARESH? (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.

Find the number of 4 letter words,with or without meaning which can be formed out of the letters the words ROSE,when The repetition of the letters is not allowed The repetition of the letters is allowed.

State True or False : Total number of two letter word, when repetition of letter is not allowed is P(26,2)

Find the number of 4 letter words, with or without meaning which can be formed out of the letters the words ROSE, when The repetition of the letters is not allowed The repetition of the letters is allowed.

Find the number of 4-letter words. with or without meaning, which can be formed out of the letters of the word, 'NOSE' , when : (i) the repetition of the leters is not allowed, (ii) the repetition of the letters is allowed.

How many numbers of 4 digits can be formed with the digits 0,1,3,4,6 if (i) repetition of digits is allowed? (ii) repetition of digits is not allowed?

How many numbers of 4 digits can be formed with the digits 0,1,3,4,6 if (i) repetition of digits is allowed? (ii) repetition of digits is not allowed?