// Numbas version: finer_feedback_settings {"name": "Question 12 TRUE/FALSE", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"functions": {}, "ungrouped_variables": [], "name": "Question 12 TRUE/FALSE", "tags": [], "preamble": {"css": "", "js": ""}, "advice": "

a) The line

z = x & !y

tells us that $z$ is true if $x$ is true and $y$ is false.

b) It follows from part (a) that $a$ is true if $z$ is false and $a$ is false if $z$ is true.

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What is the value of $z$?

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TRUE

", "

FALSE

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What is the value of $a$?

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TRUE

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FALSE

> x = TRUE
> y = FALSE
> z = x & !y
> a = !z

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