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 digits 1, 3, 5, 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?

The number of 2 digit even numbers that can be formed from the digits 1,2,3,4 and 5, repetition being not allowed,is

How many 5 digit numbers can be formed with the digits 0,1,2,3 and 4 when repetition of digits is 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 numbers between 2000 and 3000 can be formed from the digits 2, 3, 4, 5, 6, 7 when repetition of digits is not allowed?

How many even numbers of 4 digits can be formed with the digits 2,3,5,7,9 when repetition 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?