Lesson T3.1.1

T3.1.1 AND, OR and NOT Quiz: KS3 Computing, Unit 3

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson T3.1.1, AND, OR and NOT: 20 multiple choice questions for the KS3 Computing (National Curriculum), Unit 3: Boolean logic and binary, written with Revision Ninja.

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The 20 questions

  1. What does the AND operator output?

    • 1 only when both inputs are 0
    • 1 only when both inputs are 1
    • 1 when at least one input is 1
    • The opposite of its first input

  2. What does the OR operator output?

    • 1 when at least one input is 1
    • 1 only when both inputs are 1
    • The same value as its second input only
    • 1 only when both inputs are 0

  3. What does NOT do to a single input?

    • It doubles the input value each time it is applied to the number
    • It joins two inputs into one longer input, like a text string
    • It reverses the input, so 1 becomes 0 and 0 becomes 1
    • It keeps the input unchanged in every case

  4. A is 1 and B is 0. What is A AND B?

    • A and B cannot be combined
    • 2
    • 0
    • 1

  5. A is 1 and B is 0. What is A OR B?

    • 1 and 0 cannot be combined
    • 2
    • 1
    • 0

  6. What is NOT 0?

    • There is no answer for NOT 0
    • 0
    • 2
    • 1

  7. A tea bar opens only if it is the weekend AND the shop is open. Which logic operator describes this?

    • XOR written as a single word
    • NOT
    • AND
    • OR

  8. A cinema accepts a ticket if the customer is under 12 OR has a student card. Which operator is this?

    • NOT
    • AND
    • NAND written in full
    • OR

  9. A user is NOT logged in. In a program the check is written as NOT logged_in. What happens when logged_in is True?

    • The check gives the number 2
    • The check gives an error every time
    • The check gives True
    • The check gives False

  10. Which truth table row shows AND giving 0?

    • A is 0 and B is 1
    • A is 1 and B is 1 with NOT applied
    • A is 1 and B is 1
    • A is 1 and B is 1 added together

  11. Which truth table row shows OR giving 1?

    • A is 0 and B is 0
    • A is 0 and B is 1
    • A is 0 and B is 0 with NOT applied
    • A is 0 and B is 0 added together

  12. A is 1, B is 1. What is A AND B?

    • 2
    • 0
    • 1 and 1 cannot be combined
    • 1

  13. A is 0, B is 0. What is A OR B?

    • 1
    • 0 and 0 cannot be combined
    • 0
    • 2

  14. A pupil says 'NOT (A AND B)'. A is 1 and B is 0. What is the answer?

    • 0
    • 1
    • 2
    • It cannot be calculated

  15. Which is the correct description of the AND truth table?

    • The output is 1 whenever either input is 1
    • The output is 1 in one case only: both inputs are 1
    • The output is 1 whenever both inputs are 0
    • The output is always the same as the first input

  16. Why are logical operators used in programming?

    • To print results on paper for the user to read later
    • To store large pictures in memory while the program runs
    • To combine conditions and make decisions in a program
    • To change a number into a letter for display on screen

  17. What is the value of the expression x > 1 AND y > 5 when x is 3 and y is 7?

    • False
    • 0
    • An error
    • True

  18. What is the output of True AND False in Python?

    • An error
    • 1
    • True
    • False

  19. What is the output of True OR False in Python?

    • 0
    • False
    • True
    • An error

  20. Which combination of inputs gives 1 for NOT (A OR B)?

    • A is 0 and B is 1
    • A is 1 and B is 0
    • A is 1 and B is 1
    • A is 0 and B is 0

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