Math 6

Question Analysis
This question involves classifying numbers into natural and whole number sets.
The main focus is on recognizing that natural numbers are a subset of whole numbers, so all natural numbers are also whole numbers.

Key Concept Explanation
Natural numbers (N) are positive integers starting at 1, while whole numbers (N₀) include natural numbers plus zero.
Any number in N is automatically in N₀.

Step-by-Step Solution
Identify 2, 4, 6 as positive integers greater than 1.
Note that natural numbers include 1, 2, 3, ..., so 2, 4, 6 are ...