If a set is defined by the constraint of being a natural number, which of the fo

If a set is defined by the constraint of being a natural number, which of the following is included?

If a set is defined by the constraint of being a natural number, which of the following is included?

Step 1: Understand what a natural number is. Natural numbers are the positive integers starting from 1, 2, 3, and so on.
Step 2: Identify the numbers given in the question: 1, -1, 0, and 2.5.
Step 3: Check each number against the definition of natural numbers.
Step 4: Determine that 1 is a natural number because it is a positive integer.
Step 5: Determine that -1 is not a natural number because it is negative.
Step 6: Determine that 0 is not a natural number because natural numbers start from 1.
Step 7: Determine that 2.5 is not a natural number because it is not an integer.

Natural Numbers – Natural numbers are the set of positive integers starting from 1, typically represented as {1, 2, 3, ...}.
Integers vs. Natural Numbers – Understanding the distinction between integers (which include negative numbers and zero) and natural numbers (which do not include negative numbers or zero).
Rational Numbers – Recognizing that numbers like 2.5 are rational but not integers or natural numbers.