Exam-style question
Try this first
What does the symbol ℕ represent in this specification?.
- A.The set of all negative numbers
- B.The set of all natural numbers, including zero
- C.The set of numbers between zero and one
- D.The set of only the first three positive numbers
Model answer
What a good answer should say
- The set of all natural numbers, including zero
Explanation
Why this works
In this specification, ℕ denotes the natural numbers and is defined as {0, 1, 2, 3, …}.
Common mistake
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