Lesson 4.5.1.1
4.5.1.1 Natural, rational, irrational and real numbers Quiz: AQA Computer Science, Unit 5
20 questions
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Lesson 4.5.1.1, Natural, rational, irrational and real numbers: 20 multiple choice questions for the AQA Computer Science (7517), Unit 5: Fundamentals of data representation, written with Revision Ninja.
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The 20 questions
-
Which set is written as N = {0, 1, 2, 3, ...} in this specification?
- The irrational numbers
- The rational numbers
- The real numbers
- The natural numbers
-
Which of these numbers is an irrational number?
- Minus 5
- Square root of 2
- 0 point 75
- 3 over 4
-
Which number set includes all natural, rational and irrational numbers?
- Natural numbers
- Integer numbers
- Real numbers
- Rational numbers
-
How can any integer n be written to show it is rational?
- n over n
- n over 1
- n times 0
- 1 over n
-
How is an irrational number defined?
- Cannot be negative
- Is always zero
- Must be integer
- Cannot be fraction
-
Which symbol denotes the set of rational numbers?
- Z
- Q
- R
- N
-
Which number set represents all possible real-world continuous quantities?
- Rational numbers
- Integers
- Real numbers
- Natural numbers
-
Why is the number 7 classified as rational?
- It is prime
- It is positive
- It is odd
- Expressible as fraction
-
Which of the following is a rational number?
- 0.75
- Square root of 3
- Square root of 2
- Pi
-
Which of these is NOT an integer?
- 45
- -12
- 3/4
- 0
-
Which value is included in the set of natural numbers N?
- 0
- Minus 1
- 0 point 5
- Square root of 2
-
Which number set best represents continuous measurements like 2.5 metres?
- Real numbers
- Natural numbers
- Irrational numbers
- Integers
-
Which pair consists of two rational numbers?
- 2/3 and 0.5
- Pi and sqrt(2)
- 0.5 and sqrt(2)
- Pi and 2/3
-
Which number belongs to the integers Z but NOT to the natural numbers N as defined here?
- 12
- 7
- -5
- 0
-
Which set is the square root of 9 NOT a member of?
- Natural numbers
- Rational numbers
- Real numbers
- Irrational numbers
-
Every real number belongs to which classification pair?
- Rational or irrational
- Only positive integers
- Only non-zero values
- Exclusively fractions
-
Which set of numbers is closed under subtraction?
- Prime numbers
- Irrational numbers
- Natural numbers
- Integers
-
If x is rational and y is irrational, what is x + y?
- Rational
- Integer
- Irrational
- Natural number
-
Which proof technique is standardly used to show that the square root of 2 is irrational?
- Proof by contradiction
- Proof by induction
- Proof by exhaustion
- Direct proof
-
Which number set best classifies the value 2 + √3?
- Irrational numbers
- Natural numbers
- Rational numbers
- Integer numbers
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