How many numbers of 5 digits can be formed with the digits 0,1,2,3,4?

How many numbers of four digits can be formed with the digits 1,2,3,4, and 5? (if repetition of digits is not allowed).

How many numbers of four digits can be formed with the digits 1,2,3,4,5 if the digits can be repeated in the same number?

How many numbers of 3 digits can be formed with the digits 1,2,3,4,5 when digits may be repeated?

How many number of 4 digits can be formed with the digits 1,2,3,4,5 if repetition of digit is allowed and not allowed?

How many numbers of 5 digits can be formed with the digits 1,3,0,2,4,8 if (i) repetition is not allowed? (ii) repetition is allowed?

How many numbers of four digits can be formed with the digits 1, 2, 3, 4 and 5? (Repetition of digits is not allowed.)

How many number of 5 digits can be formed with the digits 0,2,4,6,8 if repetition of digits is not allowed?