To write the set of odd natural numbers less than 12 using the roster method, list each element of the set within curly braces, separated by commas. The odd natural numbers less than 12 are:

$\{1, 3, 5, 7, 9, 11\}$

This set includes all odd natural numbers starting from 1 up to, but not including, 12.

Would you like any further details or have any questions?

Here are 5 related questions:

1. What is the set of even natural numbers less than 12 using the roster method?
2. How would you write the set of prime numbers less than 20 using the roster method?
3. What is the roster method for writing the set of multiples of 3 less than 20?
4. How do you represent the set of all natural numbers less than 10 using the roster method?
5. What is the set of odd natural numbers greater than 12 but less than 20 using the roster method?

Tip: When writing sets using the roster method, always ensure that the elements are listed in increasing order, with no duplicates.