What is the number of odd integers between 1000 and 9999 with no digit repeated ?

Find the center of odd integers between 30000 and 80000 in which no digit is repeated.

Find the center of odd integers between 30000 and 80000 in which no digit is repeated.

How many numbers are there between 1000 and 9999 so that no digit is repeated.

Find the number of integers between 1 and 1000 having the sum of the digits 18.

The number of integers between 1 and 1000 having their sum of digits equal to 12 is

The number of integers between 1 and 1000 having their sum of digits equal to 12 is

The number of natural numbers less than 1000, in which no two digits are repeated is

A certain pefect square has exactly 4 digits (that is, it is an integer between 1,000 and 9,999). The positive square root of the perfect square must have how many digits?

Show that there are 4536 numbers between 1000 and 10000, which have none of their digits repeated. Of these, how many are odd numbers ?