// Numbas version: exam_results_page_options
{"name": "Interval notation (a,b]", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"rulesets": {}, "functions": {}, "preamble": {"css": "", "js": ""}, "statement": "<p>Which of the following describe the interval $(\\var{a},\\var{b}]$?</p>", "tags": [], "name": "Interval notation (a,b]", "variable_groups": [], "variablesTest": {"maxRuns": 100, "condition": ""}, "extensions": [], "advice": "<p>The&nbsp;closed (square) bracket in $(\\var{a},\\var{b}]$ signifies that&nbsp;the endpoint $\\var{b}$ is&nbsp;<strong>included</strong> in the interval whereas, the open (round) bracket signifies that the endpoint $\\var{a}$ is <strong>not included</strong>. This is known as&nbsp;the <strong>half-closed interval</strong>&nbsp;(or half-open interval) $(\\var{a},\\var{b}]$.</p>", "ungrouped_variables": ["a", "b", "delta"], "variables": {"delta": {"group": "Ungrouped variables", "definition": "random(1..10#0.25)", "templateType": "anything", "name": "delta", "description": "<p>delta</p>"}, "b": {"group": "Ungrouped variables", "definition": "a+delta", "templateType": "anything", "name": "b", "description": ""}, "a": {"group": "Ungrouped variables", "definition": "random(-10..10#0.25)", "templateType": "anything", "name": "a", "description": ""}}, "parts": [{"showFeedbackIcon": true, "type": "1_n_2", "scripts": {}, "minMarks": 0, "distractors": ["", "", "", ""], "marks": 0, "choices": ["<p>All the real numbers between $\\var{a}$ and $\\var{b}$ inclusive (i.e. including $\\var{a}$ and $\\var{b}$).</p>", "<p>All the real numbers between $\\var{a}$ and $\\var{b}$&nbsp;exclusive (i.e.&nbsp;excluding $\\var{a}$ and $\\var{b}$).</p>", "<p>All the real numbers between $\\var{a}$ and $\\var{b}$, including $\\var{a}$ but not including $\\var{b}$.</p>", "<p>All the real numbers between $\\var{a}$ and $\\var{b}$, including $\\var{b}$ but not including $\\var{a}$.</p>"], "showCorrectAnswer": true, "shuffleChoices": false, "variableReplacements": [], "displayType": "radiogroup", "maxMarks": 0, "matrix": ["0", "0", 0, "1"], "displayColumns": "1", "variableReplacementStrategy": "originalfirst"}], "metadata": {"licence": "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International", "description": "<p>Simple questions on interval notation.&nbsp;If you are not randomising the order of your questions please turn on randomise choices in these questions.</p>"}, "type": "question", "contributors": [{"name": "Ben Brawn", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/605/"}]}]}], "contributors": [{"name": "Ben Brawn", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/605/"}]}