How many non-zero numbers can be formed using the digits 0,1,2,3,4 and 5 if repetition of digits is not allowed?

How many 5-digit prime numbers can be formed using the digits 1, 2, 3, 4, 5 if the repetition of digits is not allowed?

How many three-digit even numbers can be formed using the digits 1, 2, 3, 4 and 5 when repetition of digits is not allowed ?

How many 4 -digit numbers can be formed by using' the digits 1 to 9 'if repetitions of digits is not allowed?

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, and 5? (if repetition of digits is not allowed).

How many 4-digit numbers can be formed by using the digits 1 to 9 if repetition of digits is not allowed?

How many 4-digit numbers can be formed by using the digits 1 to 9 if repetition of digits is not allowed?

How many 4-digit numbers can be formed by using the digits 1 to 9 if repetition of digits is not allowed?