How many 4-digit even numbers can be formed using the digits (1,3,0,4,7,5)? (Each digit can occur only once)

How many 5-digit even numbers can be formed using the digits 1,2,5,4,5 ?

How many 7-digit number can be formed using the digits 1,2,0,2,4,2 and 4?

How many 6-digit numbers can be formed by using the digits 4, 5, 0, 3, 4, 5?

How many four -digits even integers can be formed using the digits 0,1,2,3,4,5?

How many 7-digit numbers can be formed, using the digits 1, 2, 0, 2, 4,2 and 4?

How many 7-digit numbers can be formed by using the digits 1, 2, 0, 2, 4, 2, 4?

How many 4-digit odd number can be formed using the digit 0,2,3,5,6,8 (each digit occurs only once)?

A telephone number has seven digits, no number starts with 0. In a city, how many different telephone numbers the formed using the digits 0 to 6? (Each digit can occur only once)

How many two digit numbers can be formed using the digits (1,2,3,4,5) if no digit occurs more than once in each number?