Practice Number Systems (1) - Number Systems

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9 questions

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6 sample questions

Question 1.
What is a natural number?
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Think about the numbers you use when you count objects.
Question 2.
Is zero a whole number?
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Consider how we start counting from one versus including zero.
3Question 3.
Which of the following is a whole number?
- -1
- 0
- 1/2
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Remember the definition of whole numbers.
4Question 4.
True or False: All integers are rational numbers.
- True
- False
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Think about fraction representations.
Question 5.
Prove that the number $\sqrt{5}$ is irrational.
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Consider properties of prime numbers and their powers.
Question 6.
If there are a and b as rational numbers such that a = 1.5 and b = √2, determine whether a + b is rational.
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Look at the definition of rational and irrational numbers.

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