How many numbers can be formed from the digits 1, 2, 3, 4 when repetition is not allowed?

How many numbers can be formed from the digits 1, 2, 3, 4 when the repetition is not allowed

How many numbers can be formed from the digits 1, 2, 3, 9 if repetition of digits is not allowed ?

How many numbers can be formed from digits 1, 3, 5, 9 if repetition of digits is not allowed?

How many numbers can be formed from the digits 1,2,3 and 9 if repetition of digits is not allowed?

How many numbers can be formed from the digits 1,2,3 and 9, if repetition of digits is not allowed?

How many numbers can be formed fro the digits 1,2,3 and 9, if repetition of digits is not allowed?

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

How many 5 digit numbers can be formed with the digits 0,1,2,3 and 4 when repetition of digits is allowed?