How many three digits numbers can be formed by using the digits 0,1,3,5,7 while each digit may be repeated any number of times?

How many three digits numbers can be formed by using the digits 0,1,3,5,7 while each digit may be repeated any number of xx?

How many three-digit numbers can be formed by using the digits 1, 3, 6 and 8 when the digits may be repeated any no. of times?

How many four-digit numbers can be formed with the digits 1, 2, 3, 4, 5, 6 when a digit may be repeated any number of times in any arrangement ?

How many 4-digit numbers can be formed with the digits 0, 2, 3, 4, 5 when a digit may be repeated any number of times in any arrangement?

How many 4-digit numbers can be formed with the digits 9,8,7,5,3 when a digit may be repeated any number of times in any arrangement.

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 natural numbers less than 1000 can be formed form the digits 0,1,2,3,4,5 when a digit may be repeated any number of times?

How many 5 digit numbers can be formed using the digits 0,2,5,6,7 without repeating the digits?

How many 5-digit numbers that are divisible by 5 can be formed using the digits (0,1,3,5,7,5)? (Each digit can be repeated any number of times)

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 ?