// Numbas version: finer_feedback_settings {"name": "Jeanne's copy of Ioannis's copy of Set Notation Intro", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"preamble": {"js": "", "css": ""}, "tags": [], "name": "Jeanne's copy of Ioannis's copy of Set Notation Intro", "variables": {"f": {"definition": "random(12..15)", "group": "Ungrouped variables", "name": "f", "description": "", "templateType": "anything"}, "g": {"definition": "random(16..20)", "group": "Ungrouped variables", "name": "g", "description": "", "templateType": "anything"}, "a": {"definition": "random(1..3)", "group": "Ungrouped variables", "name": "a", "description": "", "templateType": "anything"}, "c": {"definition": "random(6..8)", "group": "Ungrouped variables", "name": "c", "description": "", "templateType": "anything"}, "d": {"definition": "random(9..11)", "group": "Ungrouped variables", "name": "d", "description": "", "templateType": "anything"}, "b": {"definition": "random(4..5)", "group": "Ungrouped variables", "name": "b", "description": "", "templateType": "anything"}}, "metadata": {"licence": "Creative Commons Attribution 4.0 International", "description": "

Understanding of intersection and union symbols.

"}, "extensions": [], "ungrouped_variables": ["a", "b", "c", "d", "f", "g"], "variable_groups": [], "functions": {}, "statement": "

The sets $A$, $B$ and $C$ are defined as follows:

\n

$ A =  \\{ \\var{a}, \\var{b}, \\var{c}, \\var{f} \\}$

\n

$ B = \\{  \\var{c}, \\var{d}, \\var{f} \\}$

\n

$ C= \\{ \\var{c}, \\var{g} \\}$

", "rulesets": {}, "advice": "

$A \\cap B$ is read as $A$ intersection $B$ and indicates the elements that are in both set $A$ and set $B$.

\n

$B \\cup C$ is read as $B$ union $C$ and indicates the elements that are either in $B$ or in $C$ or in both.

\n

\n

For more explanation, look for relevant resources in the Maths for Computing section of our Maths Study Skills page.

", "parts": [{"distractors": ["", "", "", "", "", ""], "warningType": "none", "showCorrectAnswer": true, "prompt": "

Choose the numbers that are elements of $A \\cap B$.

", "displayType": "checkbox", "minAnswers": 0, "maxMarks": 0, "maxAnswers": 0, "scripts": {}, "type": "m_n_2", "shuffleChoices": false, "marks": 0, "showFeedbackIcon": true, "matrix": ["-0.5", "-0.5", "0.5", "-0.5", "0.5", "-0.5"], "choices": ["

{a}

", "

{b}

", "

{c}

", "

{d}

", "

{f}

", "

{g}

"], "variableReplacements": [], "minMarks": 0, "variableReplacementStrategy": "originalfirst", "displayColumns": 0}, {"distractors": ["", "", "", "", "", ""], "warningType": "none", "showCorrectAnswer": true, "prompt": "

Choose the numbers that are elements of the set $B \\cup C$.

", "displayType": "checkbox", "minAnswers": 0, "maxMarks": 0, "maxAnswers": 0, "scripts": {}, "type": "m_n_2", "shuffleChoices": false, "marks": 0, "showFeedbackIcon": true, "matrix": ["-0.5", "-0.5", "0.5", "0.5", "0.5", "0.5"], "choices": ["

{a}

", "

{b}

", "

{c}

", "

{d}

", "

{f}

", "

{g}

"], "variableReplacements": [], "minMarks": 0, "variableReplacementStrategy": "originalfirst", "displayColumns": 0}], "variablesTest": {"condition": "", "maxRuns": 100}, "type": "question", "contributors": [{"name": "Ioannis Lignos", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/757/"}, {"name": "Jeanne Parmentier", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2126/"}]}]}], "contributors": [{"name": "Ioannis Lignos", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/757/"}, {"name": "Jeanne Parmentier", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2126/"}]}