# Quanti Sono I Numeri Naturali Formati Da Al Pi Ugrave Quattro Cifre Dispari Distinte

Natural numbers are whole numbers that start from 1 and go on infinitely. They are used in many areas of mathematics, including counting and measuring. We can construct natural numbers from four distinct odd digits. This article looks at counting these numbers, and examining the quantities of the resulting numbers.

## Counting Natural Numbers with Four Distinct Odd Digits

We can construct natural numbers with four distinct odd digits. These four odd digits must be distinct, meaning they cannot be the same digit repeated. For example, the number 1133 is not allowed because the two 1s are not distinct.

To count the number of natural numbers with four distinct odd digits, we can use the multiplication principle. We have four distinct odd digits, so we have four choices for the first digit, three choices for the second digit, two choices for the third digit, and one choice for the fourth digit. Therefore, the total number of natural numbers with four distinct odd digits is 4 x 3 x 2 x 1 = 24.

## Examining Quantities of the Resulting Numbers

We can also examine the quantities of the resulting numbers. Since there are four distinct odd digits, the smallest number possible is 1001 and the largest number possible is 9999. Therefore, the range of natural numbers with four distinct odd digits is 8998. Additionally, the average of these numbers is 5,000.

In conclusion, natural numbers can be constructed with four distinct odd digits. We can count the number of these numbers using the multiplication principle, and examine the quantities of the resulting numbers.