How many numbers of four digits can be formed by using the digits 1, 3, 5, 7, 9, a digit being repeated any number of times in any number ?

How many numbers greater than 56000 can be formed by using the digits 4, 5, 6,7, 8, no digit being repeated in any number ?

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

How many numbers between 20,000 and 30,000 can be formed by using the digits 2, 3, 5,6,7, if each digit may be repeated any number of times in any number ?

How many 3-digit numbers can be formed by using the digits 1 to 9 if no digit is repeated?

How many different 6-digit numbers can be formed with the digits 0, 1, 3, 5, 7 and 9 ? (No digit being repeated.)

How many four-digit numbers can be formed by using the digits 1, 2, 3, 4, 5, 6, 7 if at least one digit is repeated.

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

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

How many number of two digits are divisible by 7 ?

How many 3-digit even numbers can be made using the digits 1, 2, 3, 4, 6, 7, if no digit is repeated?