Exam-style question
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Define a natural number according to the specification and give three examples.
Model answer
What a good answer should say
- A natural number is a number in the set ℕ = {0, 1, 2, 3, …}.
- Examples include 0, 4 and 25.
Explanation
Why this works
A complete answer identifies natural numbers as the members of ℕ and states that the set includes zero and continues through the positive whole numbers. The examples must be members of this set.
Common mistake
No common mistake is linked to this question yet.